| exsheathment of the infective larva of labiostrongylus eugenii, a nematode parasite of the kangaroo island wallaby macropus eugenii. | | 1977 | 18419 |
| oxygen affinity and 2,3-diphosphoglycerate in blood of australian marsupials of differing body size. | oxygen carriage and 2,3-diphosphoglycerate (2,3-dpg) levels have been measured in the blood of seven species of australian marsupials ranging in size from 35 to 0.03 kg. they were red and grey kangaroos, wallaroo, tammar wallaby, brush-tailed possum, potoroo, and brown marsupial mouse. oxygen affinity decreased with decrease in adult body size, standard p50 (at 36 c) varying from 24.6 torr in the largest (red kangaroo) to 41.9 torr in the smallest (brown marsupial mouse). the relationship betwee ... | 1977 | 24866 |
| prolactin receptors in the mammary gland, corpus luteum and other tissues of the tammar wallaby, macropus eugenii. | specific binding of radio-iodinated ovine prolactin to subcellular tissue fractions of the tammar wallaby (macropus eugenii) was investigated. specific binding was found, in order of decreasing binding activity, in the lactating mammary gland, corpus luteum, corpus albicans, adrenal gland and ovary. specific binding was absent in kidney, liver, brain and inactive mammary gland. the mean association constant (ka at 23 degrees c) was determined as 0.90 x 10(9), 2.20 x 10(9), 2.44 x 10(9), 3.38 x 1 ... | 1979 | 230279 |
| fractionation and biological actions of pituitary gonadotropins from a marsupial, the wallaby (macropus eugenii). | | 1978 | 719112 |
| the in vitro response to phytomitogens of marsupial leukocytes. | leukocytes from two macropod marsupials, the quokka (setonix brachyuras) and the tammar (macropus eugenii) were separated from whole blood by dextran sedimentation and established in culture with either phytohemagglutinin-p, concanavalin a, or pokeweed mitogen. the leukocyte response to each mitogen, as measured by the incorporation of tritiated thymidine into dna, was similar to that described in other experimental systems. these results suggest that the functional elements of the cellular immu ... | 1976 | 979144 |
| cytoarchitecture and visual field representation in area 17 of the tammar wallaby (macropus eugenii). | tritiated proline was injected into one eye in the tammar wallaby and transported label was studied in the cortex after transneuronal passage through the lateral geniculate nucleus. the autoradiographic label and cytoarchitecture were used to anatomically demarcate the borders of area 17. electrophysiological recordings from single units were done to obtain a retinotopic map of area 17. single units in area 17 were found to have orientation sensitivity comparable to those seen in placental mamma ... | 1992 | 1281175 |
| localization of four human chromosome 21 genes--sod1, ets2, ifnar, and cbr--to two different chromosomes in the marsupial species macropus eugenii. | we have mapped the chromosomal location of four genes previously assigned to human chromosome 21--cu/zn superoxide dismutase (sod1), the protooncogene ets2, the interferon alpha/beta receptor gene (ifnar), and the carbonyl reductase gene (cbr)--in the tammar, macropus eugenii. the genes are localized on two separate autosomes: sod1 and cbr map to chromosome 7 and ets2 and ifnar map to chromosome 3 or 4. these results provide the first example of asynteny between sod1/cbr and ets2/ifnar in a mamm ... | 1992 | 1380419 |
| plasma progesterone levels in the pregnant female rat-kangaroo (bettongia gaimardi). | plasma progesterone levels were measured in female bettongs (small macropodid marsupials) under two natural regimes: (1) during "delayed" gestation (initiated by removal of pouch young, rpy) and (2) during the pregnancy prior to pouch vacation when a young still occupies the pouch (i.e., during lactation). basal levels of progesterone were 0.15-0.5 ng/ml. there was a transient peak of progesterone (0.7 ng/ml) early in gestation at day 4 rpy. after day 6 rpy, progesterone levels remained elevated ... | 1992 | 1398011 |
| evidence that cortical granule formation is a periovulatory event in marsupials. | formation of cortical granules was examined in superovulated oocytes from three marsupial species, brushtail possums (trichosurus vulpecula) tammar wallabies (macropus eugeniii) and grey short-tailed opossums (monodelphis domestica) and in oocytes obtained during natural cycles in macropus eugenii. superovulation was induced by pregnant mares' serum gonadotrophin/gonadotrophin-releasing hormone (pmsg/gnrh) protocols and natural ovulation by removal of pouch young. oocytes were collected after ov ... | 1992 | 1404089 |
| autosomal localization of the amelogenin gene in monotremes and marsupials: implications for mammalian sex chromosome evolution. | we have determined by southern blot analysis that dna sequences homologous to the amg gene probe are present in the genomes of both marsupial and monotreme mammals, although adult monotremes lack teeth. in situ hybridization and southern analysis of cell hybrids demonstrate that amg homologues are located on autosomes. in the tammar wallaby, amg homologues are located on chromosomes 5q and 1q and in the platypus, on chromosomes 1 and 2. the autosomal location of the amg homologues provides addit ... | 1992 | 1427909 |
| partition of function in the morphological subdivisions of the lateral geniculate nucleus of the tammar wallaby (macropus eugenii). | extra-cellular recordings from single cells in the dorsal lateral geniculate nucleus (dlgn) of the tammar wallaby, macropus eugenii, were made to find out whether the stratification of the nucleus could be correlated with the receptive field properties of units. retinofugal fibres terminate in the lateral geniculate nucleus of the wallaby in nine interleaved eye-specific layers. these may be grouped into a lateral alpha segment of six laminae and a medial beta segment of three, in which the cell ... | 1992 | 1498656 |
| the evolution of human chromosome 21: evidence from in situ hybridization in marsupials and a monotreme. | we have mapped five human chromosome 21 (hsa 21) markers in marsupials and a monotreme, two major groups of mammals that diverged from eutherians 130-150 and 150-170 million years before present (myrbp), respectively. we have found that these genes map to two distinct autosomal sites, one containing sod1/cbr/bcei and the other containing ets2/infar, in the marsupials macropus eugenii and sminthopsis macroura (which belong to orders that diverged 40-80 myrbp), as well as in the monotreme ornithor ... | 1992 | 1505947 |
| the tammar wallaby major plasma serpin: partial characterization including the sequence of the reactive site region. | 1. the putative equivalent of the human major plasma serpin (alpha 1-proteinase inhibitor or alpha 1-antitrypsin) in the tammar wallaby (macropus eugenii) has been further characterized by structural (peptide and immunopeptide mapping and sequence studies) and functional analyses revealing close homology of the wallaby proteins to human alpha 1-proteinase inhibitor. 2. a sixth allele, pi j, was detected and its products characterized in terms of pi, mr, inhibitory spectra and terminal sialic aci ... | 1991 | 1676950 |
| developmental profile of a fetuin-like glycoprotein in neocortex, cerebrospinal fluid and plasma of post-natal tammar wallaby (macropus eugenii). | a fetuin-like glycoprotein (flg) has been shown to be present in early cortical plate cells in the developing brain of the tammar wallaby (macropus eugenii). the developmental sequence of the occurrence of glycoprotein-positive fibres and cells in the dorsolateral telencephalic wall from newborn to day 40 is described. the level of flg in csf (cerebrospinal fluid) and plasma of the tammar wallaby has also been measured during pouch life. the presence of flg in early postnatal fibre systems and i ... | 1991 | 1710427 |
| chemical structures of three neutral oligosaccharides obtained from horse (thoroughbred) colostrum. | 1. three neutral oligosaccharides were obtained from horse colostrum by ion-exchange, activated charcoal column and preparative paper chromatographies. 2. the following structures were elucidated by methanolysis, methylation analysis and 75 mhz 13c-nmr spectroscopy; gal beta 1-4glcnac beta 1-3gal beta 1-4glc (hm-3a), gal beta 1-4glcnac beta 1-6gal beta 1-4glc (hm-3b) and gal beta 1-4glcnac beta 1-3[gal beta 1-4glcnac beta 1-6]gal beta 1-4glc (hm-5). 3. hm-3a and hm-5 have been found in human mil ... | 1991 | 1756618 |
| 1h nmr spectroscopic survey of plasma and erythrocytes from selected marsupials and domestic animals of australia. | 1. 1h nmr spectra were acquired from whole plasma, intact erythrocytes, and ultrafiltrates of erythrocytes from nine native and eight introduced (domestic) australian animals; single-pulse, spin-echo and 2-dimensional spectra were obtained. the aim was to detect and at least semi-quantify metabolites in the samples and compare the profiles amongst the species. 2. the australian natives that were studied were all marsupials: greater brown bandicoot; bettong; eastern grey kangaroo; red kangaroo; k ... | 1991 | 1769206 |
| morphometry of the epididymis of the tammar wallaby, macropus eugenii, and estimation of some physiological parameters. | about 14 ductuli efferentes (mean length 48 cm) leave the testis of the tammar. the caput, corpus and cauda epididymidis constitute 37%, 42% and 21% respectively of the total length of the ductus epididymidis (estimated to be 34.9 m long). the initial segments of the ductus epididymidis are longer, relative to body or testis mass, in the tammar than in eutherian mammals such as the rat. the main morphometric features of the male excurrent duct system of the tammar are a high ratio of surface are ... | 1991 | 1792332 |
| stability of the acrosome of the brush-tailed possum (trichosurus vulpecula) and tammar wallaby (macropus eugenii) in vitro and after exposure to conditions and agents known to cause capacitation or acrosome reaction of eutherian spermatozoa. | ejaculated spermatozoa from brush-tailed possums and tammar wallabies were washed by a 'swim up' procedure into hanks balanced salt solution (hbss), and then exposed to test solutions. spermatozoa were incubated at 33 degrees c, or room temperature when long-term sperm survival (greater than 10 h) was required. exposure of spermatozoa to calcium ionophore a23187, cyclic nucleotides, phosphoinositide pathway intermediates, lysophospholipids, trypsin or 'capacitating' high ionic-strength medium (3 ... | 1991 | 1847424 |
| biosynthesis of marsupial milk oligosaccharides: characterization and developmental changes of two galactosyltransferases in lactating mammary glands of the tammar wallaby, macropus eugenii. | tammar wallaby (macropus eugenii) mammary glands contain two galactosyltransferases of which the first, 4 beta galt, is a udp-galactose:n-acetylglucosaminyl beta 1----4-galactosyltransferase equivalent to the a protein of the lactose synthase of eutherian mammals. the second enzyme, 3 beta galt, is a udp-galactose:lactose beta 1----3-galactosyltransferase, not previously identified in mammary glands of any species, which catalyses the formation of gal beta 1----3 gal beta 1----4 glc from lactose ... | 1991 | 1901222 |
| gene mapping in marsupials: detection of an ancient autosomal gene cluster. | the genes hras, hbb, and cat, which are located together on the short arm of human chromosome 11, appear to be part of a conserved synteny group found in many eutherian mammals. these genes were mapped to the chromosomes of two marsupial (metatherian) species by in situ hybridization. all three genes were located together on chromosome 3 in macropus eugenii. only hras and cat were used to probe dasykaluta rosamondae metaphases and these genes both mapped to chromosome 4. this suggests that the h ... | 1991 | 2037289 |
| thyroid hormones during development of a marsupial, the tammar wallaby, macropus eugenii. | the levels of thyroid hormones in the plasma and the activities of 5'-deiodinase activity in liver and kidney were determined in the tammar wallaby, macropus eugenii, from early pouch life to adulthood. the total concentration of plasma thyroxine (t4) was below 15 nmol/l before day 75 of pouch life, rose to about 75 nmol/l at day 160, and then decreased to about 12 nmol/l in the adult. the total concentration of plasma tri-iodothyronine (t3) was below 0.4 nmol/l before day 120, increased to 3 nm ... | 1990 | 2280211 |
| morphology and distribution of neurons in the retinal ganglion cell layer of the adult tammar wallaby--macropus eugenii. | the morphology of the ganglion cell layer of the adult tammar wallaby has been examined from nissl-stained retinal flatmounts. from this material, neurons have been classed as ganglion cells or displaced amacrine cells according to the disposition of nissl substance. a further subdivision of ganglion cells into a separate group of alphalike cells was assisted by determining the range of soma sizes in neurofibrillar-stained flatmounts, a method which, in the cat, has revealed the presence of alph ... | 1986 | 2432096 |
| early cortical plate specific glycoprotein in a marsupial species belongs to the same family as fetuin and alpha 2hs glycoprotein. | two related glycoproteins, fetuin in species of the order artiodactyla (cattle, sheep, pig) and alpha 2hs glycoprotein in the human [(1987) cell tissue res. 248, 33-41] have a very specific distribution in the developing brain. we have isolated and determined the first 15 n-terminal residues of a similarly distributed glycoprotein in the developing brain of the tammar wallaby (macropus eugenii). the degree of homology is the same between wallaby glycoprotein and alpha 2hs glycoprotein as between ... | 1988 | 2457515 |
| a second form of gonadotropin-releasing hormone (gnrh), with chicken gnrh ii-like properties, occurs together with mammalian gnrh in marsupial brains. | gnrh peptides in the hypothalami of marsupials (tammar wallaby, short-nosed bandicoot, and eastern quoll) and a monotreme (echidna) were investigated by reverse phase hplc and ria with region-specific antisera. in the wallaby hypothalamic extract, a single form of gnrh was present, which eluted in the same position as synthetic mammalian gnrh on hplc and was recognized by antibodies directed against the nh2- and cooh-termini of mammalian gnrh as well as by antibodies to the middle region. two gn ... | 1989 | 2676480 |
| characteristics of cardiac action potentials in marsupials. | standard microelectrode techniques were used to record action potentials from single atrial, ventricular and purkinje fibers of hearts taken from three species of marsupial (macropus rufus, macropus robustus and macropus eugenii) and from dogs, sheep and guinea-pigs. the major electrophysiological parameters of marsupial potentials were qualitatively similar to the values for placental mammals. the grouped data for ventricular action potentials from studies on 6 adult male red kangaroos (macropu ... | 1989 | 2715459 |
| the development of pulmonary surfactant lipids in a neonatal marsupial and the rat. | the composition of pulmonary surfactant during development was compared in a marsupial, the tammar wallaby, and the rat. for both species phospholipid fatty acid and neutral lipid fatty acid composition is similar, and phosphatidylcholine was the principal phospholipid at each age group. the relative amount of each phospholipid class significantly changed with time in both species but the extent of these changes did not vary between species. the neutral lipid component of surfactant varied signi ... | 1989 | 2717808 |
| growth factor activity in luminal fluids from the male reproductive tract of the ram, rat, tammar wallaby (macropus eugenii) and japanese quail (coturnix coturnix japonica). | growth factor activity in luminal fluids from the male reproductive tract was assayed by measuring the stimulation of [3h]thymidine incorporation into balb/c 3t3 fibroblasts. the potency of fluids from the rete testis of the rat, ram, tammar wallaby and japanese quail was much the same. however, about 90% of the activity in fluid from the rete testis of the rat and tammar was lost during its passage through the epididymis. | 1989 | 2760881 |
| a cyto-architectonic description of the thalamus of the tammar wallaby, macropus eugenii. | very few studies are available on the cyto-architectural features of the thalamus of metatherian mammals. most of these studies describe the thalamus of a polyprotodont metatherian, the north american opossum, didelphis virginiana. studies on diprotodont metatherians are fewer still. there are two descriptions of the thalamus of the australian possum trichosurus vulpecula. the only part of the thalamus that has been described in the wallabies is the lateral geniculate nucleus. hence, there was a ... | 1989 | 2765853 |
| changes in alpha-lactalbumin, total lactose, udp-galactose hydrolase and other factors in tammar wallaby (macropus eugenii) milk during lactation. | alpha-lactalbumin was isolated from milk of m. eugenii and its concentration in milk samples taken at various times during lactation (0-40 weeks post partum) was determined by single radial immunodiffusion using rabbit antiserum to the purified protein. the alpha-lactalbumin concentration remained almost constant throughout lactation even though the concentration of total lactose (free lactose plus lactose contained in oligosaccharides) fell to zero after 34 weeks post partum. this fall in lacto ... | 1987 | 2856290 |
| blood-brain, blood-cerebrospinal fluid and cerebrospinal fluid-brain barriers in a marsupial (macropus eugenii) during development. | 1. the blood-brain, blood-csf and csf-brain barriers to protein have been studied in post-natal tammar wallabies (newborn to 70 days) using morphological and physiological techniques. 2. endogenous and exogenous plasma proteins, and in some experiments horseradish peroxidase, were used as indicators of barrier integrity or permeability. 3. immunocytochemical studies of endogenous tammar proteins showed that these (e.g. albumin) were present in the lumen of vessels in the brain, in cerebrospinal ... | 1988 | 3075668 |
| a novel whey protein synthesized only in late lactation by the mammary gland from the tammar (macropus eugenii). | a major whey protein which appears in milk from the tammar wallaby (macropus eugenii) only during the second half of lactation (late lactation protein-a, llp-a) was purified to apparent homogeneity by ion-exchange chromatography and gel filtration. an mr of 21,600 +/- 2000 was calculated from its amino acid composition. a computer-based comparison of the sequence of the first 69 amino acid residues with the atlas of protein sequence data base showed no significant homology with known proteins. a ... | 1987 | 3109381 |
| müllerian inhibiting substance production and testicular migration and descent in the pouch young of a marsupial. | the ontogeny of müllerian inhibiting substance (mis) production by the developing testis of an australian marsupial, the tammar wallaby (macropus eugenii), was determined during pouch life using an organ-culture bioassay of mouse fetal urogenital ridge. this information was related to the morphological events during testicular migration and descent. mis biological activity was found in testes (but not ovaries or liver) of pouch young from 2 to 85 days of age. mis production had commenced by day ... | 1988 | 3268402 |
| cholecystokinin octapeptide purified from brains of australian marsupials. | cholecystokinin octapeptides (cck8s) have been purified from methanol extracts of two brains from each of two australian marsupials, tammar wallaby and eastern quoll, containing 3 nmol and 2 nmol of the peptides, respectively. immunoreactive cck was concentrated on qma seppak cartridges and purified by two successive hplc steps on nova c18 radial-pak cartridges. the sequence of each of the peptides is identical with that previously reported for old world mammals (dymgwmdf). this is in contrast t ... | 1988 | 3375140 |
| tammar wallaby plasma protease inhibitory (pi) proteins. | electrophoretic examination (isoelectric focusing and polyacrylamide gel electrophoresis) of 157 plasmas from a kangaroo island population of tammar wallabies (macropus eugenii) resulted in the identification of five putative condominant protease inhibitor alleles, f, i, m, p and s, which exhibited microheterogeneity due to variable terminal sialic acid content. the frequencies of the five alleles in this population were 0.041(f), 0.682(i), 0.194(m), 0.073(p) and 0.010(s). the proteins had isoel ... | 1987 | 3453036 |
| embryo implantation and proteinase activities in a marsupial (macropus eugenii). histochemical patterns of proteinases in various gestational stages. | embryo implantation remains superficial (epithelio-chorial type) in most marsupials including the macropodidae, but does involve formation of specialized contact zones of the trophoblast with the uterine epithelium. since in eutherian mammals proteinases appear to play a central role in implantation-initiation mechanisms, a systematic histochemical investigation of proteinase patterns as related to implantation was performed in the tammar wallaby, macropus eugenii (macropodidae). tammar uteri wi ... | 1986 | 3536119 |
| vaccination against lumpy jaw and measurement of antibody response in wallabies (macropus eugenii). | successful protection against lumpy jaw disease in a colony of captive wallabies (macropus eugenii) was induced by vaccination with a commercial ovine footrot vaccine. no mortalities attributable to lumpy jaw were observed in 69 vaccinated animals while six of 42 unvaccinated control wallabies died of the disease. vaccinated animals exhibited significant increases in antibody titres to bacteroides nodosus after the first and second doses of vaccine. titres were measured by an enzyme-linked immun ... | 1987 | 3629891 |
| retinotopic organization in the dorsal lateral geniculate nucleus of the tammar wallaby (macropus eugenii). | electrophysiological recordings were made from 187 single cells in the tammar wallaby (macropus eugenii) dorsal lateral geniculate nucleus (lgnd). the results show that it is topographically organized such that the superior visual field is represented dorsally, the inferior field is represented ventrally, the nasal visual field is represented caudally, and the temporal visual field is represented rostrally. the visual field of one eye ranges from -30 degrees nasal to +179 degrees temporal in azi ... | 1987 | 3667976 |
| prolactin-dependent accumulation of alpha-lactalbumin in mammary gland explants from the pregnant tammar wallaby (macropus eugenii). | the minimal hormonal requirements for the in-vitro accumulation of alpha-lactalbumin have been investigated in a marsupial, the tammar (macropus eugenii). mammary gland explants from 24-day pregnant tammars cultured in medium containing bovine insulin, cortisol and ovine prolactin showed a progressive increase in accumulation of alpha-lactalbumin during 4 days of incubation. no increment was observed if prolactin was omitted from the medium. however, a similar rate of increase was observed after ... | 1985 | 3900266 |
| proteins of marsupial erythrocyte membranes. | the proteins of erythrocyte membranes from the red kangaroo, western grey kangaroo, eastern grey wallaroo (euro), red-necked wallaby, tammar wallaby, and brush-tail possum have been fractionated on acrylamide gels in the presence of sodium dodecyl sulfate. the pattern of proteins was remarkably similar between the different marsupial species. the pattern of coomassie blue-staining proteins in the membranes of these species was also very similar to that of the human erythrocyte membrane. however, ... | 1985 | 4051902 |
| the pituitary gland and implantation in the tammar wallaby, macropus eugenii. | | 1974 | 4854992 |
| the development of a radioimmunoassay for gonadotrophin in the tammar wallaby, macropus eugenii. | | 1972 | 5007979 |
| absence of countercurrent exchange of oxygen, carbon dioxide, hydrogen ions or glucose between the arterial and venous blood in the spermatic cords of rams and two marsupials (macropus eugenii and megaleia rufa). | | 1969 | 5357945 |
| development of dormant blastocysts induced by oestrogen in the ovariectomized marsupial, macropus eugenii. | | 1969 | 5783760 |
| enzymes of galactose metabolism in livers of suckling and adult tammar wallabies (macropus eugenii) and other marsupials. | the activities of galactokinase, hexose-1-phosphate uridylyl transferase and udpglucose 4-epimerase in homogenates of livers of two adult and 20 suckling tammar wallabies aged from 6 to 50 weeks were investigated. the activities of all three enzymes were high until 24-30 weeks post partum, after which they declined to low levels. the activities of the three liver enzymes were high in pouch young of six other species of marsupial. comparison of the activities of the three liver enzymes in sucklin ... | 1981 | 6272674 |
| prolactin and luteinizing hormone receptors in marsupial corpora lutea: relationship to control of luteal function. | prolactin and lh receptor concentrations in tammar wallaby corpora lutea (cl) have been examined and related to the control of luteal function in this and other marsupial species. during embryonic diapause, quiescent cl contained high concentrations of prolactin receptors. this was consistent with an earlier suggestion that prolactin may act directly on the cl to maintain its quiescent state. however, despite an apparent seasonal change in the mechanism by which the cl is maintained in quiescenc ... | 1982 | 6276490 |
| prolactin in the marsupial macropus eugenii, during the estrous cycle, pregnancy and lactation. | an heterologous double antibody radioimmunoassay (ria) using a guinea-pig antiserum (33-9) raised against human prolactin and 125i-ovine prolactin has been developed to measure prolactin (prl) in plasma and pituitary preparations of marsupials. in this system, purified tammar and kangaroo prl preparations showed parallel dose-response curves as did serial dilutions of crude pituitary homogenates of tammar, possum and eastern grey kangaroo. serial dilutions of plasma from ovariectomized and lacta ... | 1982 | 6282349 |
| glucose-6-phosphate dehydrogenase and lactate dehydrogenase activity in kangaroo and mouse oocytes. | glucose-6-phosphate dehydrogenase and lactate dehydrogenase activity in oocytes and follicle cells of the australian marsupial, macropus eugenii (the tammar), and the mouse were determined by a simplified microelectrophoresis method. mouse oocytes have approx 285 times more g6pd activity per picolitre of cytoplasm than tammar oocytes and about 10 times more ldh. the ratio of ldh to g6pd in mouse follicle cells is close to 3 whereas in the tammar it approaches unity. the very low levels of activi ... | 1983 | 6617161 |
| marsupial neurohypophysial hormones: identification of mesotocin, lysine vasopressin, and phenypressin in the quokka wallaby (setonix brachyurus). | the neurohypophysial hormones of the quokka wallaby (setonix brachyurus) have been isolated through preparative high pressure liquid chromatography (hplc). one oxytocin-like and two vasopressin-like peptides have been found. these peptides have been characterized by their amino acid composition and by their retention time in hplc. mesotocin ([i1e8]-oxytocin) has been identified by amino acid composition, polar partition chromatography, high pressure liquid chromatography with a reversed phase co ... | 1983 | 6618161 |
| control of gonadotrophin secretion in the female tammar wallaby (macropus eugenii). | a heterologous radioimmunoassay for tammar wallaby fsh, using an ovine fsh antiserum and a human fsh tracer, is described. with this assay concentrations of fsh in plasma of intact female tammars are not detectable except rarely at the time of oestrus. however the assay has proved useful in studies of the control of gonadotrophin secretion in intact male and in ovariectomized tammars. in the female tammar, concentrations of lh and fsh in plasma rose within a few days of bilateral ovariectomy. ov ... | 1980 | 6776212 |
| intestinal lactase (beta-galactosidase) and other glycosidase activities in suckling and adult tammar wallabies (macropus eugenii). | the activities of various glycosidases in homogenates of the small intestinal mucosa of two adult and 18 suckling tammar wallabies (m. eugenii) aged from 6 to 50 weeks were investigated. lactase (beta-d-galactosidase), beta-n-acetylglucosaminidase, alpha-l-fucosidase and neuraminidase activities were high during the first 34 weeks post partum and then declined to very low levels. maltase, isomaltase, sucrase and trehalase activities were very low or absent during the first 34 weeks, and then inc ... | 1980 | 6783021 |
| purification, properties, partial sequence and evolutionary relationships of marsupial erythrocyte carbonic anhydrase. | carbonic anhydrase (ec 4.2.1.1) has been purified from the erythrocytes of the tammar wallaby (macropus eugenii desmarest). the enzyme was separated into four zones of activity. the three major individual forms were isolated as discrete entities. comparison of substrate specificity, specific activities, kinetic constants and inhibition characteristics indicated that these heteromorphs represented minor post-translational modifications of a single gene product of carbonic anhydrase ii type. doubl ... | 1982 | 6817802 |
| comparative studies of embryo metabolism in early pregnancy. | embryo metabolism during early pregnancy has been investigated, mainly in the mouse and rabbit, using a variety of catabolic and anabolic parameters. the rate of metabolic activity of the conceptus continues to increase markedly with the approach of implantation. however, in species in which the embryo enters a period of delayed implantation the diapause is associated with relative metabolic quiescence. mouse, rabbit, ovine and bovine preimplantation embryos can be cultured in a simple defined m ... | 1981 | 7014867 |
| positional distribution of fatty acids in triglycerides from milk of several species of mammals. | milk triglycerides from the echidna, koala, tammar wallaby, guinea pig, dog, cat, weddell seal, horse, pig and cow were subjected to fatty acid and stereospecific analysis to determine the positional distribution of the fatty acids in the triglycerides. the samples presented a wide range of fatty acids, most of which varied in content among species. the compositions of the acids at the 3 positions also varied among species, reflecting the content of these acids in the triglycerides. however, the ... | 1982 | 7109856 |
| the distribution and sizes of ganglion cells in the retinas of five australian marsupials. | maps of ganglion-cell distribution have been constructed from whole-mounted retinas of five australian marsupial species. the pademelon wallaby (thylogale billiardieri), the scrub wallaby or tammar (macropus eugenii), and the carnivorous tasmanian devil (sarcophilus harissi) have both a visual streak and an area centralis. the retina of the brown bandicoot (isoodon obesulus) also shows both these features but they are less prominent than in the former three species, whereas the burrow-dwelling, ... | 1981 | 7204673 |
| the prevalence of anti-leptospiral agglutinins in sera of wildlife in southeastern australia. | anti-leptospiral agglutinins were found in the serum from 18 (7 species) of 419 (25 species) animals sampled from various areas of southeastern australia. positive serologic reactions were observed in 5 of 25 (20%) brush-tailed possum (trichosurus vulpecula), 1 of 26 (3.8%) tammar wallaby (macropus eugenii), 2 of 12 (16.7%) swamp wallaby (wallabia bicolor), 1 of 3 (33.3%) koala (phascolarctos cinereus), 3 of 41 (7.3%) common wombat (vombatus ursinus), 2 of 100 (2%) bush rat (rattus fuscipes) and ... | 1981 | 7241704 |
| macropodid marsupial luteinizing hormone: validation of assay procedures and changes in concentrations in plasma during the oestrous cycle in the female tammar wallaby (macropus eugenii). | a heterologous double antibody radioimmunoassay employing a rabbit anti-ovine lh antiserum (gdn no. 15) has been developed for the assessment of concentrations of lh in macropodid marsupial pituitary extracts and plasma. in this radioimmunoassay system highly purified ovine, rat human and kangaroo lh preparations demonstrated apparently parallel dose-response curves, as did serial dilutions of crude pituitary extracts from a wide range of austrlian marsupial species and serial dilutions of plasm ... | 1980 | 7430881 |
| immunohistological staining of lymphoid tissue in four australian marsupial species using species cross-reactive antibodies. | antibodies raised against evolutionarily conserved intracytoplasmic peptide sequences of human t and b lymphocyte antigens and an antibody raised specifically against koala serum igg were assessed for their capacity for immunoperoxidase staining of formalin fixed lymphoid tissues of koalas (phascolarctos cinereus), common brushtail possums (trichosurus vulpecula), common ringtail possums (pseudocheirus peregrinus) and tammar wallabies (macropus eugenii). utilizing microwave pretreatment and a st ... | 1995 | 7493768 |
| neural responses to free-field auditory stimulation in the superior colliculus of the wallaby (macropus eugenii). | auditory responses to free-field broad band stimulation from different directions were recorded from clusters of neurones in the superior colliculus (sc) of the anaesthetized tammar wallaby. the auditory responses were found approximately 2 mm beneath the first recording of visually evoked responses in the superficial layers, the vast majority being solely auditory in nature; only one recording responded to both auditory and visual stimulation. responses to suprathreshold intensities displayed s ... | 1995 | 7498376 |
| analysis of insulin-like growth factor binding proteins in the tammar wallaby, macropus eugenii. | the insulin-like growth factors (igfs) are important regulators of growth and development in eutherian mammals. in this study we have analyzed circulating insulin-like growth factor binding proteins (igfbps) by western ligand blotting (wlb) and neutral gel filtration, and hepatic igfbp mrna transcripts in the wallaby, macropus eugenii, a marsupial in which the fetus is born at an immature stage compared to eutherian mammals. plasma from male and female adults, lactating mothers, and pouch young ... | 1995 | 7544753 |
| widespread expression of the testis-determining gene sry in a marsupial. | there is compelling evidence from mutation analysis and transgenesis that the sry gene isolated from human and mouse encodes the testis-determining factor on the mammalian y chromosome. however, how sry achieves this function is unclear. although marsupials have been separated from eutherian mammals for approximately 100 million years, homologues of sry have been localised to the y chromosome of two unrelated marsupial species, the tammar wallaby and the darling downs dunnart. gonadal developmen ... | 1995 | 7581465 |
| wallaby transthyretin. | a cdna library was constructed from liver rna of the australian diprotodont marsupial macropus eugenii, the tammar wallaby. a cloned full-length transthyretin cdna was sequenced. the derived amino-acid sequence showed 68% overall similarity to that of human transthyretin, with 86% similarity in the thyroxine binding site. comparisons of nucleotide and amino acid sequences from several vertebrate species indicated that the greatest differences were in the region corresponding to the disordered n- ... | 1995 | 7584829 |
| differential changes in the milk concentrations of epidermal growth factor and insulin-like growth factor-i during lactation in the tammar wallaby, macropus eugenii. | insulin-like growth factor-i (igf-i) and epidermal growth factor (egf) have been measured in milk during lactation of the tammar wallaby (macropus eugenii) and related to the total growth-promoting activity of the milk as determined in cultured l6 rat myoblasts. egf increased throughout lactation from 10 ng/ml at 99 days to 25 ng/ml at 263 days. as a greater increase occurred with total soluble proteins in the milk, the egf content per milligram of protein was decreased slightly during lactation ... | 1995 | 7628685 |
| neuraminic acid specific lectins as markers of early cortical plate neurons. | early cortical plate and subplate cells in the developing neocortex of many animal species and humans contain one specific plasma protein, fetuin. fetuin is heavily glycosylated and it is possible that due to the large amount of sugars, this molecule may play a part in cellular recognition during brain development. cellular and extracellular carbohydrates in the developing brain of the sheep were studied histochemically using a battery of fluorescein-labelled lectins. two neuraminic acid specifi ... | 1993 | 7694444 |
| exon organization and sequence of the genes encoding alpha-lactalbumin and beta-lactoglobulin from the tammar wallaby (macropodidae, marsupialia). | clones encompassing the genes encoding alpha-lactalbumin and beta-lactoglobulin were isolated from a tammar wallaby genomic library, the exons localized using end-labeled oligonucleotides and the dna sequences determined. the tammar beta-lactoglobulin gene has the same 7 exon-6 intron structure as the sheep homologue. potential binding sites for mammary gland-specific transcription factors were identified, on the basis of similarity to sites in the sheep gene, in the promoter region of the tamma ... | 1995 | 7794241 |
| development of the visual cortex in a wallaby--phylogenetic implications. | the visual cortex of one of the smallest macropod marsupials, a wallaby, the quokka setonix brachyurus, was examined at maturity and during development from postnatal day 1 to 150 in nissl-stained or golgi-stained sections. injections of horseradish peroxidase into the primary visual centres in adults identified cortical neurons projecting to these regions. the pattern of cell generation was determined by tritiated thymidine/autoradiography. the adult visual cortex was composed of the usual six ... | 1995 | 7796093 |
| the complete primary structure of late lactation protein from quokka (setonix brachyurus). | the complete primary structure of the late lactation protein from the milk of quokka (setonix brachyurus) is presented. the amino acid sequence was established by n-terminal sequence analysis of high-performance liquid chromatography purified intact protein and peptides isolated from chemical and enzymatic digests of the protein. the protein contains 158 residues including four cysteines. the sequence comparison with the tamar wallaby (macropus eugenii) late lactation protein shows only five dif ... | 1994 | 7832979 |
| timecourse of development of the wallaby trigeminal pathway. i. periphery to brainstem. | the development of the vibrissae and their innervation and the maturation of the brainstem trigeminal sensory nuclei have been studied in the wallaby, macropus eugenii, from birth to adulthood. at birth, developing vibrissal follicles consist of solid epidermal pegs surrounded by dermal condensations. the developing follicles and adjacent skin are innervated by trigeminal afferents. ten days after birth the follicle contains a dermal papilla and the deep vibrissal nerve can be recognised. a hair ... | 1994 | 7860801 |
| interactions of sperm and the reproductive ducts of the male tammar wallaby, macropus eugenii (macropodidae: marsupialia). | this review compares sperm production in the tammar wallaby and eutherian mammals, particularly the rat. the capacity of sperm to fertilize an ovum when they leave the testis and the changes they undergo in the epididymidis are considered. the structural differentiation and regulation of the extratesticular duct system is assessed and related to the reabsorption and secretion of water, inorganic ions and proteins, and the interaction of sperm and proteins synthesized and secreted by the epididym ... | 1994 | 7878219 |
| higher female than male recombination rates in a marsupial mammal, the tammar wallaby (macropus eugenii). | previous work has shown that females have lower recombination rates than males in two distinctly related marsupial species, an american didelphid and an australian dasyurid. we report here that the tammar wallaby (macropus eugenii), which belongs to a third major group, has higher female recombination rates in two linked pairs. the nature of the sex differences in recombination rates in this species is thus similar to the situation in eutherian mammals. | 1995 | 7956362 |
| the identification of nuclear and mitochondrial genes by sequencing randomly chosen clones from a marsupial mammary gland cdna library. | to increase the number of genes that can be mapped to the genome of the tammar wallaby (macropus eugenii), we sequenced 100 randomly chosen clones from a mammary gland cdna library. provisional identifications were made of seven nuclear genes and one mitochondrial gene encoding two caseins, beta-galactosidase, acetyl-coenzyme a synthetase, lipoprotein lipase, inorganic pyrophosphatase, an atp-dependent rna helicase, and cytochrome c oxidase i. highly conserved genes, such as that encoding acetyl ... | 1994 | 7993373 |
| phosphoglycerate kinase pseudogenes in the tammar wallaby and other macropodid marsupials. | phosphoglycerate kinase (ec 2.7.2.3; pgk) exists in two forms in marsupials. pgk1 is an x-linked house-keeping enzyme, and pgk2 is a mainly testis-specific enzyme under autosomal control. we have used pgk1 probes derived from two closely related species of macropodid marsupials (kangaroos and wallabies) to demonstrate the existence of a large family of pseudogenes in the tammar wallaby (macropus eugenii). over 30 fragments are detectable after taq digestion. we estimate that there are 25-30 copi ... | 1994 | 8000135 |
| the marsupial mhc: the tammar wallaby, macropus eugenii, contains an expressed dna-like gene on chromosome 1. | in the placental mammal major histocompatibility complex (mhc) three main families of class ii genes, dr, dq, and dp, have been recognized. each family contains genes that code for one or more a- and b-chains. recent evidence has indicated that a fourth family can be described, the dn/do family. these four families arose sometime early in mammalian evolution. our purpose was to deduce the mhc of an early mammalian ancestor of marsupials and eutherians. using primers designed to conserved regions ... | 1994 | 8028029 |
| ovarian function and its manipulation in the tammar wallaby, macropus eugenii. | this study aimed to develop a superovulation protocol for the monovulatory tammar wallaby (macropus eugenii), and examined the regulation of ovarian activity which leads to alternate ovulation in this marsupial. the most effective stimulatory treatment was 20 i.u. pregnant mare serum gonadotrophin (pmsg) given intramuscularly (i.m.) 20 days after the activation of an oestrous cycle by the removal of a sucking pouch young (rpy). bromocriptine treatment was given at the time of rpy if the animal w ... | 1993 | 8234891 |
| an evaluation of a live toxoplasma gondii vaccine in tammar wallabies (macropus eugenii) | | 1993 | 8240176 |
| seven genes on the short arm of human chromosome 3 map to two regions on macropus eugenii (tammar wallaby) chromosome 2. | seven genes were mapped by in situ hybridization to metaphase chromosomes of the marsupial species macropus eugenii, using a series of human-derived cloned probes (six cosmids and one cdna). the genes were located in two widely separated clusters on the long arm of m. eugenii chromosome 2, in contrast to their location in a single cluster on the distal half of the short arm of human chromosome 3. multiple rearrangements had to be involved in the evolutionary divergence of these chromosome segmen ... | 1994 | 8258295 |
| identification of a marsupial otf1 gene: cross-species sts analysis and in situ cross-hybridization to macropus eugenii chromosomes 3/4 and 5. | the ability of the human octamer-binding transcription factor 1 (gene symbol: otf1) sequence tagged site (sts) marker to identify cross-species gene homologues has been assessed using the marsupial macropus eugenii genome. two regions of sequence homology with human otf1 have been located on m. eugenii chromosomes 3/4 and 5 by in situ hybridization. these regions are likely to represent cross-reaction with the homologues of human otf1 and closely related otf2 genes. | 1994 | 8258303 |
| dna fingerprinting in relation to male dominance and paternity in a captive colony of tammar wallabies (macropus eugenii). | the tammar wallaby has a polygynous mating system in which the dominant male usually controls initial access to oestrous females by mating first and then guarding the female from the advances of other subordinate males. in this study we used dna fingerprinting with a human 3' hypervariable region (hvr) alpha globin probe to examine the paternity of pouch young progeny from 13 female tammars that were given continual access during the breeding season to a group of four sexually mature males. cons ... | 1993 | 8283449 |
| the tammar wallaby (macropus eugenii) and the sprague-dawley rat: comparative anatomy and physiology of inguinoscrotal testicular descent. | inguinoscrotal testicular descent in the tammar wallaby (macropus eugenii) and the sprague-dawley rat was studied by macroscopic dissection, histological evaluation and organ culture bioassay. in 3 or 4 d sprague-dawley rats (n = 10) the gubernacular tip bulged free from the surrounding tissues, particularly with the application of abdominal pressure. microscopic examination revealed that only the body of the gubernaculum is connected posteriorly to the pubic region. in contrast, macroscopic dis ... | 1993 | 8300426 |
| a eutherian x-linked gene, pdha1, is autosomal in marsupials: a model for the evolution of a second, testis-specific variant in eutherian mammals. | we report the cloning and mapping of a gene (pdha) for the pyruvate dehydrogenase e1 alpha subunit in marsupials. in situ hybridization and southern blot analysis show that pdha is autosomal in marsupials, mapping to chromosome 3q in sminthopsis macroura and 5p in macropus eugenii. since these locations represent a region that was translocated to the p arm of the human x chromosome following marsupial/eutherian divergence, we suggest that the marsupial pdha gene is homologous to pdha1, the somat ... | 1993 | 8307573 |
| pathology of experimentally-induced, acute toxoplasmosis in macropods. | thirteen tammar wallabies (macropus eugenii) were dosed orally with 500, 1000 or 10,000 oocysts of toxoplasma gondii, as part of a vaccination trial. eleven animals died of acute toxoplasmosis 9 to 15 days after challenge. the lesions were similar in all animals, consisting of foci of necrosis and inflammation in the intestines, lymphoid tissue, adrenal cortex, heart, skeletal muscle and brain, and severe generalised pulmonary congestion and oedema. free and intracellular tachyzoites of toxoplas ... | 1993 | 8460990 |
| geometry of the representation of the visual field on the superior colliculus of the wallaby (macropus eugenii). i. normal projection. | in 13 wallabies (macropus eugenii, the tammar), microelectrode recordings of the activity of units in the superficial layers of the superior colliculus in response to a flashing light spot were used to make a map of the spatial location of their receptive fields. this article describes the projection of a normal eye to the contralateral colliculus. ten of the 13 animals had one rotated eye and these projections are analysed in the accompanying paper (james et al., this issue). units responded br ... | 1993 | 8468407 |
| phospholipid composition of erythrocyte membranes and plasma of mammalian blood including australian marsupials; quantitative 31p nmr analysis using detergent. | the phospholipid classes of erythrocyte membranes and plasma from several domestic animals and marsupials were quantified by 31p nmr using detergents. washed erythrocyte samples were thoroughly haemolysed by tip-sonication and dissolved in sodium cholate; plasma samples were dissolved in triton x-100. the species studied were: common wombat (vombatus ursinus), black-striped wallaby (macropus dorsalis), bandicoot (isoodon macrocarpus), eastern grey kangaroo (macropus giganteus), tammar wallaby (m ... | 1996 | 8653579 |
| comparative aspects of oxytocin-like hormones in marsupials. | unlike eutherian mammals which secrete only oxytocin (ot), marsupials secrete the typically reptilian mesotocin (mt) and/or ot as their oxytocic peptides. our laboratories have been conducting research on various aspects of the roles of ot-like peptides in three marsupials, the brushtail possum, the northern brown bandicoot and the tammar wallaby. by providing information on the functions of ot-like peptides in these species we hope to provide some clues as to the evolution of neurohypophysial h ... | 1995 | 8714028 |
| the molecular basis of ru486 resistance in the tammar wallaby, macropus eugenii. | ru486 acts as a potent anti-progestin in humans but does not antagonise progesterone action in the chicken or hamster reflecting a substitution in the ligand binding domain (lbd) of cysteine for glycine in both the chicken and the hamster progesterone receptor (pr), at the position corresponding to codon 722 of the human pr. the tammar wallaby, macropus eugenii, is also resistant to the effects of ru486. cloning of a partial cdna of the pr in the tammar wallaby reveals a glycine to alanine subst ... | 1996 | 8807636 |
| the human/mouse imprinted genes igf2, h19, snrpn and znf127 map to two conserved autosomal clusters in a marsupial. | the four genes igf2, h19, snrpn and znf127 are imprinted in mouse and human. igf2 and h19 form one conserved cluster on the distal part of mouse chromosome 7 and human chromosome 11p15.5, whereas snrpn and znf127 form another on the middle of mouse chromosome 7 and on human chromosome 15q11-13. we have explored the evolution of these imprinted regions by cloning and mapping igf2, h19, snrpn and znf127 homeologues in marsupials. specifically, we wished to determine whether the arrangements were s ... | 1996 | 8817070 |
| gonadal sex reversal of the developing marsupial ovary in vivo and in vitro. | undifferentiated tammar wallaby ovaries were transplanted under the skin of male pouch young during the period of mitotic division of the xx germ cells. after 25 days, all the germ cells had disappeared and the ovaries contained seminiferous-like cords. similarly, undifferentiated ovaries cultured for 4 days with recombinant human müllerian-inhibiting substance (rhmis) also contained well-differentiated seminiferous-like cords and few or no surviving germ cells. the majority of controls cultured ... | 1996 | 9012525 |
| serum analytes in the tammar wallaby, macropus eugenii. | | 1997 | 9066975 |
| the candidate sex-reversing dax1 gene is autosomal in marsupials: implications for the evolution of sex determination in mammals. | the human x-linked dax1 gene was cloned from the region of the short arm of the human x found in duplicate in sex-reversed xdup y females (e. zanaria et al., 1994, nature 372: 635-641). dax1 is suggested to be required for ovarian differentiation and to play an important role in mammalian sex determination or differentiation pathways. its proposed dose-dependent effect on sexual development suggests that dax1 could represent an evolutionary link with an ancestral sex-determining mechanism that d ... | 1997 | 9169141 |
| an electrophoretic analysis of patterns of speciation in cloacina clarkae, c. communis, c. petrogale and c. similis (nematoda:strongyloidea) from macropodid marsupials. | an electrophoretic study was conducted on cloacina clarkae, c. communis, c. petrogale and c. similis based on 19 enzyme loci. c. communis was widely distributed in macropus robustus, showing some genetic variation among populations but occasionally switching to other macropodid hosts (m. agilis, m. antilopinus). c. similis occurred in members of the petrogale penicillata complex, macropus dorsalis and thylogale billardierii, but showed no evidence of genetic differentiation in spite of its occur ... | 1997 | 9193942 |
| development of the lymphoid tissues of the tammar wallaby macropus eugenii. | a study has been made of the development of four lymphoid tissues from birth to maturity in the tammar wallaby macropus eugenii--the cervical and thoracic thymus, lymph nodes and gut-associated lymphoid tissue (galt). the development of these tissues in the tammar wallaby is similar to that in two other marsupials, the quokka setonix brachyurus and the virginian opossum didelphis virginiana. lymphocytes were first detected in the cervical thymus of the tammar at day 2 post partum and in the thor ... | 1997 | 9208435 |
| evolution of shorter and more hydrophilic transthyretin n-termini by stepwise conversion of exon 2 into intron 1 sequences (shifting the 3' splice site of intron 1) | transthyretin cdna was cloned from eastern grey kangaroo liver and its nucleotide sequence determined. analysis of the derived amino acid sequence of kangaroo transthyretin, together with data obtained previously for transthyretins from other vertebrate species [duan, w., richardson, s. j., babon, j. j., heyes, r. j., southwell, b. r., harms, p. j., wettenhall, r. e. h., dziegielewska, k. m., selwood, l., bradley, a. j., brack, c. m. & schreiber, g. (1995) eur. j. biochem. 227, 396-406], showed ... | 1997 | 9208931 |
| marsupial relaxin: complementary deoxyribonucleic acid sequence and gene expression in the female and male tammar wallaby, macropus eugenii. | the nucleotide and derived amino acid sequences of tammar preprorelaxin were established by combined reverse transcriptase polymerase chain reaction and 3'- and 5'-rapid amplification of cdna ends methods, using rna from the corpus luteum of late pregnancy as template. relaxin gene expression was then investigated in tissues at various stages of the 26-day pregnancy and in adult males. the full-length tammar relaxin preprohormone is 579 base pairs. the derived amino acid sequence contains a prob ... | 1997 | 9209089 |
| shared dna sequences between the x and y chromosomes in the tammar wallaby - evidence for independent additions to eutherian and marsupial sex chromosomes. | marsupial sex chromosomes are smaller than their eutherian counterparts and are thought to reflect an ancestral mammalian x and y. the gene content of this original x is represented largely by the long arm of the human x chromosome. genes on the short arm of the human x are autosomal in marsupials and monotremes, and represent a recent addition to the eutherian x and y. the marsupial x and y apparently lack a pseudoautosomal region and show only end-to-end pairing at meiosis. however, the sex ch ... | 1997 | 9215558 |
| retinotopic order in the optic nerve and superior colliculus during development of the retinocollicular projection in the wallaby (macropus eugenii). | retinotopic order of optic axons in the optic nerve and superior colliculus of the marsupial mammal, the wallaby (macropus eugenii), has been examined and compared during development of the retinocollicular projection to investigate the role of order in the nerve in map formation. small groups of axons from different retinal quadrants were labelled in vivo with a carbocyanine dye from just after axons first reached the colliculus to when the projection was mature. the distribution and branching ... | 1997 | 9278159 |
| shared synteny between human chromosome 10 and chromosome 1 of the marsupial tammar wallaby, macropus eugenii. | marsupial homologs of the human chromosome 10 loci il2ra, hk1, and plau have been cloned and mapped by fluorescence in situ hybridization to chromosome 1q of the tammar wallaby, macropus eugenii. relative distance measurements of the hybridization signals on m. eugenii chromosome 1 show that marsupial homologs of human (hsa) 10p il2ra and 10q hk1/plau flank the marsupial homologs of the human 5q gene il5 and the human 15q imprinted genes snrpn and znf127. the shared synteny, therefore, does not ... | 1997 | 9284925 |
| two roles for mu-crystallin: a lens structural protein in diurnal marsupials and a possible enzyme in mammalian retinas. | micro-crystallin is a major taxon-specific lens protein in some marsupials. like other taxon-specific crystallins, it probably has another, non-crystallin role. here we examine the distribution of mu-crystallin among species and its localization in the eye in placental mammals. we also compare its sequence and ligand binding characteristics with those of known enzymes. | 1997 | 9285773 |
| hybridization between tammar wallaby (macropus eugenii) populations from western and south australia. | populations of tammar wallabies (macropus eugenii) occur in southwest western australia and on five australian offshore islands, four in western australia and one in south australia. the south australia and western australia populations have probably been isolated from each other for 50,000-100,000 years. studies have shown that there are morphological and genetic differences between these populations. attempts at mating individuals from garden island (western australia) with individuals from ka ... | 1997 | 9378916 |
| isolation and partial characterization of tammar wallaby luteinizing hormone and development of a radioimmunoassay. | tammar wallaby (macropus eugenii) luteinizing hormone (lh) was purified from pituitaries collected from wild and captive populations by salt sequential precipitation, ion exchange chromatography and gel filtration. pituitary tissue (5 g) yielded 1.8 mg of purified wallaby luteinizing hormone (me-14b), as verified by sodium dodecyl sulfate polyacrylamide gel electrophoresis (sds-page). a heterologous radioimmunoassay has been developed for measurement of lh in plasma of marsupials using a monoclo ... | 1997 | 9402258 |
| the metabolic properties of spermatozoa from the epididymis of the tammar wallaby, macropus eugenii. | the utilization of various substrates by sperm from the cauda epididymidis of the tammar was examined because the major naturally occurring sugar in the semen of this species is n-acetyl-d-glucosamine (nag) and not furctose, as in eutherian mammals. the sperm displayed a high level of endogenous respiration that supported motility for relatively prolonged periods of time in vitro. they also metabolised exogenous 14c-labelled glucose, nag, sucrose, and acetate through glycolytic and/or oxidative ... | 1998 | 9406199 |
| axon order in the visual pathway of the quokka wallaby. | axon order throughout the visual pathway of the quokka wallaby (setonix brachyurus) was determined after localised retinal applications of the tracers dii and/or diasp. postnatal days (p) 22-90 were studied to encompass the development and refinement of retinal projections. order was essentially similar at all stages. axons entered the optic nerve head true to their sector of retinal origin. in the optic nerve, nasal and temporal axons continued to reflect their retinal origin, dominating, respe ... | 1998 | 9455896 |