| [granular networks in the cells of bidder's organ in bufo bufo l]. | | 1970 | 4918625 |
| [migration of germinal cells of the common toad (bufo bufo l.) after treatment of embryos with actinomycin d]. | | 1969 | 4981832 |
| [tyrosinase activity in the skin melanophores in adult xenopus laevis and in larvae of bufo bufo in different experimental conditions]. | | 1968 | 4985654 |
| [cytospectrophotometric observations on the embryonic, larval and metamorphotic blood elements in bufo bufo]. | | 1971 | 4994974 |
| [observations on the ontogenesis of hemoglobins in bufo bufo]. | | 1971 | 4995025 |
| [regeneration of mesencephalon in the larvae of discoglossus sardus (tschudi) and bufo bufo(l.)]. | | 1970 | 4999478 |
| the fine structure of ultimobranchial secretory cells in the anurans: rana temporaria l. and bufo bufo l. | | 1970 | 5000388 |
| effects of mammalian gonadotropins on ovary in the toad bufo bufo bufo (l.). | | 1971 | 5001858 |
| regulation of ovarian cycle in the toad bufo bufo bufo (l.): effects of autografting pars distalis of the hypophysis, of extirpating gonadotropic hypothalamic region, and of partial ovariectomy. | | 1971 | 5001859 |
| [the action of prolactin on thyroidectomized larvae of bufo bufo]. | | 1971 | 5089926 |
| [ketosteroids in the prepericardic body of bufo bufo]. | | 1971 | 5089927 |
| effects of prolactin on arginase activity in the liver of bufo bufo larvae under different experimental conditions. | | 1971 | 5095205 |
| [electric stimulation of the retinal projection field in the midbrain of the terrestrial toad (bufo bufo l.)]. | | 1967 | 5237606 |
| [a behavioural study on "stroboscopic vision" in the common toad (bufo bufo l)]. | | 1968 | 5247216 |
| the activities and concentrations of sodium and potassium in toad oocytes. | 1. the activity of potassium, a(k), in the cytoplasm of oocytes from the toad, bufo bufo, as measured by potassium-sensitive glass micro-electrodes, was 82 mm. the concentration of potassium, c(k), in oocytes from the same ovaries, as determined by flame photometric analysis, was 113 mm. the ratio a(k)/c(k) = 0.73 does not differ significantly from the measured activity coefficient of the normal ringer bathing solution, which is 0.75.2. the activity of sodium, a(na), in the cytoplasm of toad ooc ... | 1969 | 5355002 |
| [organogenesis of the urogenital apparatus of amphibia: agenesis and interruption of the duct of wolff in bufo bufo embryos]. | | 1969 | 5357411 |
| [size and dna content of erythrocyte and spermatozoal nuclei in bufo bufo (l.) and bufo viridis (laur.)]. | | 1969 | 5378511 |
| [the life history of the toad, bufo bufo (l.); the orientation problem]. | | 1969 | 5394219 |
| [early appearance of arginase activity in the liver of bufo bufo larvae treated with prolactin]. | | 1969 | 5398281 |
| endocrine control of oocyte maturation and oviducal jelly release in the toad, bufo bufo (l.). | | 1969 | 5403619 |
| on the early appearance of arginase activity in the liver of bufo bufo larvae after prolactin treatment. | | 1970 | 5435508 |
| annual oviduct cycle and its control in the toad, bufo bufo l. | | 1970 | 5438609 |
| effect of transection at different levels of hypothalamus on the hypothalamo-hypophysial system of the toad, bufo bufo, with particular reference to the ultrastructure of the zona externa of the median eminence. | | 1970 | 5447674 |
| vitellogenesis in bidderian oocytes after diethylstilbestrol dipropionate treatment on bufo bufo adult males. | | 1970 | 5460904 |
| [constitution of the hemoglobin of the toad bufo bufo spinosus]. | | 1970 | 5489826 |
| effects of prolonged saline exposure on water, sodium and urea transport and on electron-microscopical characteristics of the isolated urinary bladder of the toad bufo bufo. | 1. a comparison was made of various transport properties and electron-microscopical characteristics of isolated urinary bladders from toads (bufo bufo) maintained in either tap water or 0.7% saline (0.7 g nacl in 100 ml. h(2)o) for 10 days to 2 months.2. in the absence of pitressin, isolated bladders from saline-adapted toads showed:(a) markedly, and significantly, lower osmotic water flow;(b) moderately, but not significantly, lower urea permeability;(c) no significant change in net sodium tran ... | 1970 | 5500822 |
| the effect of cell size on the na and k concentrations in single oocytes of bufo bufo. | | 1970 | 5501043 |
| autoradiographic demonstration of inhomogeneous distribution of sodium in single oocytes of bufo bufo. | 1. autoradiography of frozen cells labelled with (22)na has been used to locate a sequestered fraction of internal na in the oocyte which exchanges very slowly or not at all with external li.2. relative grain density in nucleus and cytoplasm, measured photometrically, was used as an indication of (22)na distribution within the oocyte. in test experiments grain density fell to 50% within 19 mum of the edge of the section. owing to the large diameter of the oocyte (> 600 mum) and its nucleus (> 20 ... | 1970 | 5501264 |
| neural mechanisms of prey-catching and avoidance behavior in the toad (bufo bufo l.). | | 1970 | 5535458 |
| [the ultrastructure of the adenohypophysis in the toad, bufo bufo l. ii. on the formtion of glycoprotein containing cells of type ii (perivascular basophils) after thyroidectomy]. | | 1971 | 5545444 |
| [influence of disturbing stimulation on the reactivity in direction fixation of the common toad (bufo bufo l)]. | | 1967 | 5590852 |
| [the behavior of the endoplasmic reticulum of the liver cells of the toad (bufo bufo l.) during various phases of the annual cycle]. | | 1967 | 5604751 |
| [the action of dichlorophenamide on the deposition of calcium salts in the endolymphatic sac of bufo bufo larvae]. | | 1967 | 5606141 |
| [comparative effects of argine- and lysine-vasopression on diuresis in the european toad]. | | 1967 | 5615469 |
| [the action of prolactin and the somatotropic hormone on normal and hypophysectomized bufo bufo larvae]. | | 1967 | 5617961 |
| autoradiographic demonstration of sequestered fraction of na in single oocytes of bufo bufo. | | 1968 | 5691942 |
| [migration urge and population-specific onset of the breeding migration in the toad bufo bufo (l.)]. | | 1968 | 5728690 |
| [behavior of the toad bufo bufo (l.); migration and sommer quarters]. | | 1968 | 5728696 |
| [body growth and metabolism of iodine in larvae of bufo bufo treated with prolactin: study with i-125]. | | 1968 | 5731695 |
| [causal analysis of the changes in the spinal cord induced by nacns in bufo bufo l. embryos]. | | 1968 | 5740923 |
| [oxidation of fumarate and competition between lactate dehydrogenase and the cytochrome system in the mitochondria of oocytes and embryos of bufo bufo]. | | 1968 | 5754643 |
| [experimental studies on the action mechanism of neurohormone d from periplaneta americana (l) on the "biological model" of bufo bufo (l) urinary bladder]. | | 1969 | 5765445 |
| role of the preoptic-neurohypophysial system in the water economy of the toad, bufo bufo l. | | 1969 | 5765447 |
| [prey-catching behavior of toads (bufo bufo l) with diencephalic and pretectal lesions in relation to moving and stationary visual stimuli]. | | 1969 | 5813439 |
| [quantitive analysis of stimulus-reaction relations in the visually released orienting component of the prey-catching behaviour of the common toad (bufo buf l.)]. | | 1969 | 5813952 |
| [production of melanic pigment in the kupffer cells of bufo bufo (l.)]. | | 1965 | 5876772 |
| [electron microscopic observations on bidder's organ of bufo bufo. i]. | | 1964 | 5878233 |
| [electron microscopic observations on bidder's organ of bufo bufo. ii]. | | 1964 | 5878234 |
| [the action of insulin on body weight and on some endocrine glands of normal and hypophysectomized larvae of bufo bufo]. | | 1966 | 5963552 |
| changes in the pituitary of the common toad, bufo bufo, during metamorphosis, and the identification of the thyrotropic cells. | | 1966 | 5966252 |
| solvent drag on urea and thiourea across small intestine of testudo hermanni and bufo bufo urinary bladder. | | 1966 | 5968936 |
| [the uptake of ca-45 in larvae of bufo bufo deprived of the endolymphatic sac]. | | 1966 | 5992148 |
| [release of prey and flight behavior by electric stimulation of the midbrain in the terrestrial toad (bufo bufo l.)]. | | 1966 | 5992823 |
| concentration of thyroid hormone in the blood of the toad bufo bufo. | | 1967 | 6024551 |
| [asymmetrical distribution of urea in the urinary bladder of bufo bufo. effect of amphotericin b and of pilocarpine]. | | 1967 | 6050483 |
| [effects of somatotropic and lactotropic hormones on some tests of anaerobic glycolysis in bufo bufo tadpole livers]. | | 1967 | 6056602 |
| [amphibian neurohypophyseal hormones: isolation and characterization of mesotocin and vasotocin from the toad (bufo bufo)]. | | 1967 | 6069052 |
| nervous control of the permeability characteristics of the isolated skin of the toad bufo bufo l. | | 1967 | 6080514 |
| chloride channels in toad skin. | a study of the voltage and time dependence of a transepithelial cl- current in toad skin (bufo bufo) by the voltage-clamp method leads to the conclusion that potential has a dual role for cl- transport. one is to control the permeability of an apical membrane cl-pathway, the other is to drive cl- ions through this pathway. experimental analysis of the gating kinetics is rendered difficult owing to a contamination of the gated currents by cellular ion redistribution currents. to obtain insight in ... | 1982 | 6130539 |
| cell kinetics in the epidermis of the toad bufo bufo bufo (l.) after partial hypophysectomy followed by corticotrophin treatment (an autoradiographic study). | 1. cell kinetic parameters in the epidermis of partially hypophysectomized, acth-treated toads whose moulting frequency was increased threefold were studied using labelled thymidine and the autoradiographic technique. 2. the labelling index, length of s-phase and cycle time of stratum germinativum cells changed slowly as a function of the number of acth injections, and so did the migration of cells from stratum germinativum to stratum corneum. 3. a cell production in stratum germinativum of norm ... | 1983 | 6133672 |
| serosal and mucosal facilitated transport of urea in urinary bladder of of bufo bufo: evidence for an alleged water uptake. | in bufo bufo urinary bladder an urea facilitated transport has been localised on the luminal membrane. the transport fulfils the criteria for such a mechanism, i.e. is saturable and is inhibited by phloretin, a specific inhibitor for urea transport. similarly to that of bufo marinus and rana esculenta the luminal membrane of bufo bufo urinary bladder shows an adh stimulated facilitated transport. experiments wtih amphotericin b, serosal phloretin (with and without adh), have demonstrated the pre ... | 1983 | 6135534 |
| occurrence of type a and type b monoamine oxidase activities in toad egg mitochondria. | monoamine oxidase activity has been assayed radiochemically in mitochondria from bufo bufo eggs. time courses of mao activity towards pea and 5-ht indicate that when pea is used as a substrate higher specific activities are obtained. the inhibition patterns by clorgyline and deprenyl demonstrate that both type a and type b mao are present. type a activity is more sensitive than type b to the inhibitory effect of triton x-100. low concentrations of 2-mercaptoethanol cause a slight stimulation of ... | 1984 | 6149079 |
| metallothionein present or induced in the three species of frogs bombina orientalis, bufo bufo japonicus and hyla arborea japonica. | a low molecular weight copper (cu)- and/or zinc (zn)-binding protein was present in the livers (and kidneys) of the three species of frogs bombina orientalis, bufo bufo japonicus and hyla arborea japonica. cadmium (cd) accumulated in the livers (and kidneys) after repeated i.m. injections of cd2+ was mostly bound to the same metal-binding protein as cd, zn- or cd, zn, cu-thionein. concentrations of cd and several essential elements in the livers and kidneys of the three species of frogs were det ... | 1984 | 6151449 |
| active urea transport through isolated skins of frog and toad. | urea influxes (ji) and effluxes (je) were studied across the isolated skins of rana esculenta, bufo bufo, and b. viridis. two symmetrical pieces of the same skin, bathed in ringer + 2 mm urea, were used for the two fluxes. in r. esculenta the urea fluxes are passive when the animals are kept in running water but become active after dehydration in air or preadaptation in saline solutions. the ratio ji/je can vary between 3 and 27 and the ji between 2 and 22 nmol . h-1 . cm-2 according to preadapt ... | 1981 | 6169283 |
| localization of calcium in fibrocytes associated with the "substantia amorpha" in the skin of toad, bufo bufo (l.) (amphibia, anura). | using the potassium pyroantimonate-technique in the fibrocytes associated with the calcium-containing granules of the substantia amorpha within the dermis of bufo bufo numerous electron-dense deposits have been observed. reaction product lies in the mitochondria, at the plasma membranes and in various vesicular structures. x-ray microanalysis confirmed that pyroantimonate was predominantly associated with calcium. it is suggested that certain organelles of the fibrocytes are capable of sequester ... | 1982 | 6179122 |
| the nature of urea transport across the luminal membrane of bufo bufo urinary bladder. | by using the washing-out technique, counterflow acceleration for urea was demonstrated on the luminal membrane of bufo bufo urinary bladder, in the absence of adh. this phenomenon completely disappears in the presence of phloretin 10-4 m on the luminal side and is consistent with the presence of a mobile carrier mechanism for urea transport across the luminal membrane, in basal conditions. in the presence of adh, counterflow acceleration is completely absent. this result is in agreement with the ... | 1982 | 6182852 |
| [experimental study of larval myelogenesis in the central nervous system of bufo bufo]. | | 1982 | 6185101 |
| feeding experiments in the toad bufo bufo bufo (l.): effects of extirpation of pars distalis of the pituitary gland on feeding behavior. | | 1980 | 6245014 |
| the sodium current underlying the responses of toad rods to light. | 1. intracellular responses were recorded from single rods in the retina of the toads bufo bufo and bufo marinus during exposure to solutions in which sodium was replaced by equimolar amounts of choline. 2. upon moderate reduction (80 and 50 mm) of the external sodium the size of responses to bright flashes decreased as a consequence of both an increase in the resting potential and a decrease of the membrane potential at the peak, while the level of the plateau remained fairly constant. 3. upon r ... | 1981 | 6273546 |
| the influence of acth fragments on habituation of the prey catching behaviour in the european toad (bufo bufo l.). | earlier observations on the influence of the acth molecule on habituation in toads revealed a capacity, which resembles the improvement of learning and memory processes in rats [6]. in the present investigation acth, acth1-10 and acth11-24 were tested on habituation of turning reaction, a stereotypic component of the prey catching behaviour in the european toad, bufo bufo l.. furthermore the time relationship of the acth-effect was determined by injections at different times prior to the beginni ... | 1982 | 6281825 |
| developmental aspects of hexose metabolism in bufo bufo. | due to the close correlation between glucose mobilization and utilization within animal tissues, in this paper, the stages of appearance of phosphorylase, glucose-6-phosphatase and hexokinase as well as the levels of some intermediates of glucose metabolism have been investigated during bufo bufo development. phosphorylase first appears at stage 13 and is dominant in the neural part of the embryo, but, after this stage, increases relatively more in the nonneural one. hexokinase appears at stage ... | 1982 | 6296268 |
| [electrotonic transmission between primary afferent fibers and the motor neurons of the isolated spinal cord of various representative amphibians]. | studies have been made of monosynaptic excitatory postsynaptic potentials elicited by stimulation of the posterior root in motoneurones of the isolated spinal cord of the frog rana ridibunda, toad bufo bufo, and clawed toad xenopus laevis. in all the amphibians studied, the early component of monosynaptic epsp was not blocked in ca-free medium containing 2 mm mn2+. it is suggested that electrical coupling in anuran amphibians reflects certain stage of evolution of the synaptic transmission in ve ... | 1983 | 6316697 |
| microsomal monooxygenase system in frog livers. | liver microsomes prepared from four species of frog, rana catesbeiana, rana nigromaculata , bufo bufo japonicus, and xenopus laevis, contained cytochrome p-450 and showed nad(p)h-dependent monooxygenase activities to several foreign chemical compounds tested. the oxidations of the chemical compounds by frog liver microsomes showed significant variations among frog species. the oxidation of 7-ethoxycoumarin was much faster than that by rat liver microsomes. the oxidation of benzo(a)pyrene was sig ... | 1984 | 6329594 |
| observations on the routes of infection of oswaldocruzia filiformis (nematoda: trichostrongylidae) in amphibia. | the oral, percutaneous and subcutaneous routes of infection of oswaldocruzia filiformis were investigated in amphibia. tadpoles of bufo bufo and rana temporaria can be infected with o. filiformis when kept temporarily in a suspension of infective larvae in water. larval stages and subadults were found in tadpoles. all stages of the parasite, including egg-producing females, were found after metamorphosis of the host. however, under natural circumstances infection of tadpoles seems unlikely. oral ... | 1983 | 6404067 |
| relation between activity of tectal neurons and prey-catching behavior in toads bufo bufo. | | 1983 | 6405285 |
| neuronal correlates of edge preference in prey-catching behavior of toads bufo bufo. | | 1983 | 6410287 |
| [nature of the products of in vitro interrenal synthesis in adult bufo bufo formosus]. | corticosterone (b), aldosterone (aldo), 11-deoxycorticosterone (doc), 11-dehydrocorticosterone (a), 18-hydroxycorticosterone (18 oh b) and cortisol (f) are identified after incubation of interrenal of bufo bufo formosus with radioactive progesterone. yields of radioactive b and aldo are larger than those of radioactive doc, a and 18 oh b; yield of radioactive f is the smallest one. | 1983 | 6414657 |
| cholinergic system in the toad's (bufo bufo l.) visual system. | the brain structures mediating the prey-catching behavior of the toad have been described in earlier studies but none of these studies has identified the transmitter systems in the optic tectum responsible for this behavior. behavioral tests with different test compounds provide evidence that the cells responsible for the orienting, jumping, and snapping behaviors associated with feeding in toads are normally inhibited by cholinergic synapses. | 1983 | 6416249 |
| effects of telencephalic ablation on visual unit, sustained potential shift, and eegs recorded from the toad tectum in response to a visual stimulus. | extracellular recordings were made of visual unit activity, sustained potential shifts (spss), and electroencephalographic activity (eegs) from the optic tectum and of eegs from the telencephalon of immobilized toads (bufo bufo). moving visual stimuli were presented, and the bioelectric responses were monitored both before and after ligature of the telencephalon. the operation reduced the neuronal spike frequency and the amplitude of the tectal sps and eeg responses. eegs were still recorded fro ... | 1984 | 6421296 |
| tubular myelin structures in the lungs of amphibia. the mode of formation. | the lungs of the tree frog hyla arborea and the toad bufo bufo were fixed in glutaraldehyde with the addition of picric acid or tannic acid to visualize tubular myelin (tm), one of the forms of pulmonary surfactant. the lungs of both hyla and bufo are complex in structure and possess one type of pneumocytes containing numerous lamellar bodies (lbs). the alveolar lining layer in the lung of hyla includes numerous lbs at different stages of transformation into a monolayer film, but the lattice is ... | 1984 | 6421587 |
| studies on corticoid action on the toad tadpole tail in vitro. | the effect of adrenal corticoids on the shrinkage of tail segments from bufo bufo japonicus tadpoles was studied in vitro. deoxycorticosterone acetate (dca) was effective in accelerating the shrinkage of tail segments if thyroxine (t4) or triiodothyronine (t3) was present in the medium. the shrinkage caused by dca was dose dependent. in the absence of thyroid hormone, dca did not induce tail resorption. shrinkage of tail segments induced by dca and t4 was blocked by prolactin. among the steroid ... | 1983 | 6421652 |
| ultrastructural localization of immunoreactive calcitonin in the two cell types of the ultimobranchial gland of the common toad (bufo bufo l.). | the ultimobranchial (ub) glands of the common toad bufo bufo consist of several cellular masses containing two quite different cell types which line a central lumen filled with amorphous material. the morphologically defined type i cell is akin to a typical calcitonin secretory cell as observed for all vertebrates, with small dense-core secretory granules. on the contrary the type ii cell displays large apical dense bodies which may be related to the secretion and/or absorption of the amorphous ... | 1984 | 6421654 |
| current-voltage relations of the basolateral membrane in tight amphibian epithelia: use of nystatin to depolarize the apical membrane. | exposure of the mucosal side of toad (bufo bufo) urinary bladder and frog (rana ridibunda) skin to the polyene ionophore nystatin, resulted in stable preparations in which the apical resistance was negligible compared to the basolateral resistance. the preparations support passive k currents in both directions and an amiloride-insensitive na current in the apical-serosal direction which is blocked by ouabain. the nystatin-treated toad bladder was used to study the electrical properties of the ba ... | 1984 | 6422046 |
| in vitro induction of sperm nucleus decondensation by cytosol from mature toad eggs. | an in vitro assay was performed on the cytosol from oocytes of the toad, bufo bufo japonicus, to examine the cytoplasmic activity that induces sperm nucleus decondensation (snd). when the sperm, pretreated for 15 min with 0.05% triton x-100, were incubated in cytosol obtained from mature eggs (18 h post-hormone treatment: pht) 30-60 min after activation, their nuclei elongated and swelled markedly to take a spherical shape between 1 and 2 h after incubation. the treatment of such detergent-treat ... | 1984 | 6427388 |
| visual unit, eeg and sustained potential shift responses in the brains of toads (bufo bufo) during alert and defensive behavior. | cranially mounted differential preamplifiers allowed visual unit activity, eegs and sustained potential shifts to be monitored from the tectum of freely moving toads (bufo bufo). alert behavior was elicited by a moving visual stimulus. movement of the stimulus in the receptive field of a unit elicited its activity and increased the amplitude of the high frequency component of the local eeg, accompanied by a sustained potential shift. when an animal received a "prod" with a perspex rod, defensive ... | 1984 | 6431460 |
| effect of vasopressin on the permeability of nonelectrolytes across the skins of rana esculenta and bufo bufo. | | 1984 | 6432008 |
| toad egg-jelly as a source of divalent cations essential for fertilization. | dejellied uterine eggs of the toad bufo bufo japonicus are not fertilizable in 1/20 de boer's solution (1/20 db), but are fertilized when inseminated in a uv-solubilized jelly (uvj) or the dialyzate of uvj (uvjd). the present study was carried out to define this fertilization-supporting activity of egg-jelly. dejellied eggs were fertilized in a high frequency when inseminated in a medium containing the ashes obtained by heating uvjd at 600 degrees c for 16 hr. similarly, a reconstituted salt sol ... | 1984 | 6434358 |
| [the biological composition of the toad (bufo bufo)]. | | 1984 | 6436839 |
| corticosterone stimulates the development of preoptic catecholamine neurons in tadpoles bufo bufo japonicus. | in bufo bufo japonicus catecholamine neurons in the preoptic recess organ (pro) became detectable at the metamorphic climax by formaldehyde-induced fluorescence (falck-hillarp technique). in hypophysectomized tadpoles metamorphosis was inhibited and no fluorescent neurons appeared in the pro. implantation of a pituitary graft to the hypophysectomized tadpoles induced metamorphosis and development of pro catecholamine neurons. administration of corticosterone to hypophysectomized tadpoles resulte ... | 1984 | 6440455 |
| the sarcomere length--isometric tension diagram of the toad bufo bufo sartorius. | the sarcomere length--isometric tension diagram has been determined for the toad bufo bufo sartorius using a laser diffraction technique to measure the sarcomere width. the sarcomere width at l0 was found to be 2.37 micron. at length shorter than l0 this whole muscle exhibits a steeper decline in tension than single fibres. this discrepancy in the shape of the tension-length diagram between single frog fibres and whole toad sartorii may be due to a difference in the magnitude of the internal for ... | 1980 | 6770986 |
| the role of eye accommodation in the depth perception of common toads. | distance estimation in prey catching was as exact in monocular toads (bufo bufo (l.)) as in binocular ones. application of atropine or miotic had no significant effect on binocular animals, whereas in monocular toads it made accurate distance estimation impossible. the accommodative state of the eye is decisive for depth estimation of monocular, but not of binocular toads. | 1980 | 6778008 |
| [further observations on central nervous system myelination in bufo bufo]. | | 1980 | 6781429 |
| effects of changing external potassium and chloride concentrations on the photoresponses of bufo bufo rods. | 1. intracellular responses to light were recorded from bufo bufo rods in different ionic media. 2. the exposure of the retina to high external [k+] depolarized the rod and modified the time course of the photoresponse. the prominent initial transient of rod responses to bright flashes was drastically reduced in 5 mm-external [k+] and completely disappeared in 26 mm. in high external [k+] the kinetics of responses to dim flashes were considerably slower than in control conditions. 3. when externa ... | 1980 | 6782240 |
| some ultrastructural aspects of bufo bufo hepatic cells during development and metamorphosis. | | 1980 | 6784689 |
| vasoactive intestinal polypeptide (vip)-like immunoreactivity in anuran intestine. | immunocytochemical and radioimmunological techniques with region specific antisera have been used to identify a vasoactive intestinal polypeptide-like material in the anuran intestine. seven species of anura were investigated: bombina bombina, alytes obstetricans, rana temporaria, rana esculenta, hyla arborea, hyla crepitans and bufo bufo. in five of the species (a. obstetricans, r. temporaria, h. arborea, h. crepitans and b. bufo) vasoactive intestinal polypeptide-like immunoreactive mucosal en ... | 1981 | 6784927 |
| synthetic activity in cell-free systems of ribosomes subunits isolated from bufo bufo unfertilized eggs. | | 1980 | 6787689 |
| nonspecific acid-esterase activity in lymphoid cells of bufo bufo. | | 1981 | 6788592 |
| [blood elements in bufo bufo during embryonic development, larval development and metamorphosis: observations by scanning electron microscopy]. | | 1981 | 6793047 |
| [quantitative observations on the development of the genital bodies in bufo bufo (l.)]. | | 1980 | 6794469 |
| isometric contractile properties and instantaneous stiffness of amphibian skeletal muscle in the temperature range from 0 to 20 degrees c. | the isometric contractile properties of frog (rana pipiens) and toad (bufo bufo) sartorii have been studied over the temperature range from 0 to 20 degrees c. the isometric twitch tension was found to vary considerably between these two species and between muscles in the same species. between 0 and 4 degrees c there was very little change in maximum isometric twitch tension. between 4 and 12 degrees c several muscles from frog or toad showed a potentiation of twitch tension whereas others showed ... | 1981 | 6794890 |