Publications

TitleAbstractYear
Filter
PMID(sorted ascending)
Filter
mutagenic effects of petrol in drosophila melanogaster i. effects of benzene and 1,2-dichloroethane.commercial petrol and two of its components, benzene and 1,2-dichloroethane, were tested for mutagenicity in drosophila melanogaster. the chemicals were given to larvae through their food supply. a genetically unstable sexlinked test system caused by a transposable genetic element was used. mutagenicity was measured by the frequency of somatic mutations for eye pigmentation. commercial petrol and 1,2-dichloroethane showed mutagenic activity. with the system used, benzene did not show any mutagen ...199996337
case for diagnosis. 199996362
utilization of emergency room at an army hospital: an initial report. 199996363
role of the pediatric nurse clinician in early identification of potential child abuse. 199996373
[metabolic aspects of the complications of burns]. 199996385
[parenteral nutrition in acute uremia in the surgical patient]. 199996386
[diurnal variations in glucose tolerance in normal subjects and changes induced by oral glibenclamide]. 199996388
[clinico-statistical study of materno-fetal isoimmunization in the clinica ostetrica e ginecologica of the university of modena from 1968 to 1976]. 199996389
[etiology of tooth mobility and methods of decreasing pathological tooth mobility]. 199996397
hurler/scheie phenotype. report of an inbred sibship with tapeto-retinal degeneration and electron-microscopie examination of the conjuctiva.an inbred sibship with corneal opacities and deficient alpha-l-iduronidase activity showed signs of a hurler/scheie phenotype. the children were of normal intelligence. in one of the children, electron microscopy of the conjunctiva showed membrane-bound intracellular vacuoles and the electroretinogram was extinguished. the consanguinity of the parents is taken to indicate the presence of homozygosity of a mutant gene different from both the hurler and scheie mutants, thus rejecting the concept o ...199996404
hyperthyroidism in juvenile diabetes mellitus.three cases of hyperthyroidism occurring in juvenile patients with diabetes mellitus are presented. the presence of hyperthyroidism should be suspected in patients with diabetes mellitus when goiters develop and when there is unexplained weight loss, tachycardia, tremors, unexplained increases in insulin requirement, or instability of the diabetes with a tendency toward development of ketosis and/or ketoacidosis.199996415
isolation and characterization of a highly repetitious inverted terminal repeat sequence from oxytricha macronuclear dna.the low-complexity "gene-sized" linear dna duplexes of the oxytricha macronucleus sport short inverted terminal repeats; thus, each single strand is capable of forming a circle held together by a duplex "neck" [wesley, r. d. (1975) porc. natl. acad. sci. usa 72, 678--682]. we have isolated necks from total, circularized, single-stranded macronuclear dna by treatment with nuclease s1. necks represent at least 2.2% of the total dna, are homogeneous in size (23 base pairs), melt at 55 degrees in 0. ...199996439
deprenyl administration in man: a selective monoamine oxidase b inhibitor without the 'cheese effect'.after pretreatment with the selective monoamine oxidase b inhibitor, (-)-deprenyl, in doses sufficient for complete inhibition of the platelet enzyme, 4 normal and 6 parkinsoniam volunteers (2 receiving levodopa and 2 levodopa plus carbidopa) suffered no adverse pressor reaction ('cheese effect') after challenge with oral tyramine in amounts considerably greater than those likely to be encountered in a normal diet. nor did the levodopa-deprenyl combination itself result in a pressor response. no ...197896466
brain and liver aldehyde dehydrogenase activity and voluntary ethanol consumption by rats: relations to strain, sex, and age.voluntary ethanol consumption and brain and liver aldehyde dehydrogenase (aldh) activity were measured in male and female rats of the tryon maze-bright (s1), tryon maze-dull (s3), and wistar strains. the levels of brain aldh measured in the different groups, corresponded well to the levels of ethanol consumption, while differences in liver aldh corresponded well to only the strain differences in ethanol intake. within individual groups, levels of ethanol consumption correlated better with levels ...197896475
response of a rat rhabdomyosarcoma to neon- and helium-ion irradiation. 197896481
radiotherapy in marginal resectable and non-resectable rectum cancer.66 patients with inoperable rectum cancer were treated with megavoltage irradiation. these patients were studied in order to see if high dose radiotherapy could cure inoperable patients. no patients were cured. the palliative effect was important, because in most patients a colostomy was avoided. 21 patients with marginal resectable rectum cancer received preoperative irradiation. the effect of combined therapy in this highly selected group of patients gives an indication for a 50% 5-year cure r ...199996483
total-body irradiation with 25-mv photons in advanced non-hodgkin's lymphoma and chronic lymphocytic leukemia. preliminary results and complications.patients with chronic lymphocytic leukemia (cll) and non-hodgkin's lymphoma were treated with total-body irradiation (tbi). one group was treated after chemotherapy failed, while the other group received tbi initially. tbi was ineffective against cll after chemotherapy failed. all patients with lymphocytic lymphoma who initially responded to chemotherapy but later relapsed were helped by tbi, as were 88% of patients with previously untreated lymphocytic lymphomas.199996493
[plasmapheresis in series in pregnant women severely sensitized to rh factor]. 199996495
some response characteristics of co2 electrodes.radiometer carbon dioxide electrodes and probably other electrodes of similar design do not give the same readings, except under certain very limited conditions, when used to measure carbon dioxide concentrations in solution and the gas phase with which the liquid is in equilibrium. blood samples of high p(co2), when introduced into the sample chamber of an electrode at low p(co2), lose co2 to the electrode resulting in a reduction of sample p(co2) and hence, because the sample size is very smal ...199996504
studies on the determination of plasma prolactin.a double antibody solid-phase (dasp) and a plyethylene glycol (peg) radioimmunoassay method for plasma prolactin determination were developed and evaluated as to their reliability. the iodination of prolactin was carried out using a lactoperoxidase sorbent with iodination conditions being optimized by studying the effect of reaction buffer ph in the range 5.0--7.0 at two ionic strengths. with the dasp-technique, intra-assay coefficient of variation was 6% (n = 30) and the inter-assay coefficient ...199996520
hemolysis induced by cefazolin and cephalothin in a patient with penicillin sensitivity.a patient with penicillin sensitivity, who had never received a cephalosporin antibiotic previously, developed anemia and spherocytosis following the administration of cefazolin. hemolysis abated when the drug was discontinued on the fourth day, and recurred on day six when cephalothin therapy was begun. igg and complement components were present on the patient's erythrocytes, and igg antibodies in her serum reacted with normal red blood cells which had been coated with benzylpenicillin, cefazol ...199996555
haplotype designations of various strains of guinea pigs. 197896556
[studies of dnp protein dissociation in the presence of norepinephrine].calf thymus dnp dissociation was studied by sepharose 2b gel-chromatography as well as by oxyapatite ion-exchange chromatography. the degree of dissociation was estimated by protein content in the chromatography peaks. intact dnp and dnp incubated with norepinephrine were filtered simultaneously through two identical columns. in the presence of norepinephrine a partial deproteinization was observed. this effect has some specificity, namely, it was considerably lower in the presence of tyrosine, ...197896558
[effect of the diet containing rendering fats on the milk yield and vitamin e content in the milk of dairy cows].in three groups of first-calvers with 15 animals each, with an identical basal diet, we followed for six months the effect of the dob mixture additive without fat, the dob mixture with 5% of rendering-plant fat obtained mechanically and dob with 5% of rendering-plant fat after perchlorethylene extraction (0.90% perchlorethylene residuum). this additive of rendering-plant fats in concentrate mixtures as a substitute for grain in our experiment increased milk efficiency and the production of milk ...197896572
terminal redundancy of "high frequency of recombination" markers of bacillus subtilis phage spo1. 197896587
development of visual acuity in infant monkeys (macaca nemestrina) during the early postnatal weeks. 197896592
clinical relevance of the liver-specific lipoprotein (lsp). 197896648
diagnostic value of determinations of lysosomal hydrolases in csf of patients with neurological diseases.the activities of four lysosomal acid hydrolases, beta-galactosidase, alpha-mannosidase at ph 4.5 and 5.5, n-acetyl-beta-glucosaminidase, and acid phosphatase, have been measured in serum and cerebrospinal fluid from 179 patients with different neurological diseases and from 20 healthy controls. in patients with tumours, decreased activity of beta-galactosidase was found in both serum and cerebrospinal fluid, and in patients with multiple sclerosis and collagen diseases, decreased activities of ...199996653
[congenital glaucoma in hurler's syndrome and in lowe's syndrome. clinical and electron microscopy findings].2 cases of congenital glaucoma combined with a general metabolic disease are described. 1 patient displayed the symptoms of a mucopolysaccharidosis (hurler's syndrome), the other patient showed the characteristics of lowe's oculo-cerebrorenal syndrome. in both patients a surgical trabeculectomy was performed. the excised tissues were analysed by electron microscopy. distinct vacuolar or fibrillar deposits were observed in both cases in the trabecular region and in schlemm's canal. possibly, thes ...199996681
structural alterations of the porcine heterograft after various durations of implantation.morphologic changes in six glutaraldehyde-fixed porcine heterografts recovered from five patients were studied with light and scanning electron microscopy. light microscopy showed minimal changes in the valves recovered after 2 months of implantation. fibrin deposits, red blood cell trapping, disruption of the valve matrix and interstitial edema were noted in heterografts 2 months and 2 years after implantation. in valves examined with scanning electron microscopy, 6 hours after implantation the ...197896685
time course of adh-induced intramembranous particle aggregation in toad urinary bladder. 199996700
contrasting effects of living in heterosexual pairs and mixed groups on the structure of social attraction in squirrel monkeys (saimiri).the structure of social attraction was assessed in pair- and group-living squirrel monkeys (saimiri) using paired-comparison and single-stimulus preference tests. effects of the social environment were most prominent in females. females housed with a single male showed sharply increased attraction to like-sex strangers and less pronounced increase in attraction to opposite-sex strangers, as compared to group-living females. differences between pair- and group-living males were in the same direct ...197896707
alertness, level of activity, and purposive movement following somatosensory deafferentation in monkeys. 197796722
x-ray absorption spectroscopy of biological molecules. 199996725
differential binding of penicillin by membrane fractions from penicillin-susceptible and -resistant gonococci.an inverse relationship between binding of [(14)c]penicillin to cells of neisseria gonorrhoeae and the minimal inhibitory concentration of penicillin was recently reported by us. herein we report a similar relationship in binding by cytoplasmic membranes derived from 10 strains of gonococci. membranes were extracted after braun homogenization and differential centrifugation of the resulting extracts. membranes derived from penicillin-susceptible cells bound 140 to 200 nmol of [(14)c]penicillin p ...197896727
composition and potential use of some tropical fruits.the nutritional role fruits could play in poor-quality diets, as sources of vitamin a and ascorbic acid, is described. likewise, summarized information is presented on the use of some unknown tropical fruits relatively abundant in central america as components of high-protein foods, providing nutrients such as provitamin a and ascorbic acid, as well as a variety of flavors. in these studies the fruit pulp as a purée was added either fresh or drum-dried, to a corn-soybean blend. in all cases ther ...199996749
[cardiac amyloidosis: clinical, x-ray, electric, hemodynamic, developmental and pathological aspects. apropos of 85 cases collected from french cardiology departments].85 cases of cardiac amyloidosis have been collected from the university cardiac departments of france. four distinct clinical pictures have emerged: 1. primary cardiac amyloidosis (36 cases) which combines: congestive cardiac failure, ecg signs (extreme axis deviation, low voltage, signs of myocardial necrosis), arrhythmias (67%), and a rapidly fatal outcome (23.2 m +/- 8.5); 2. cardiac amyloidosis associated with a marked neuromuscular amyloidosis (8 cases), in patients of portuguese extraction ...199996754
[prospective etiologic survey on apparently primary nonobstructive myocardiopathies in adults. 57 cases, excluding ischemic cardiopathies].a prospective study into the aetiology of presumed primary non-obstructive cardiomyopathy was carried out in 57 patients who had no lesions of the trunk of the coronary artery; one case of haemochromatosis and one of amyloidosis were found. excluding these two cases of cardiomyopathy which were in fact secondary, most of the others were associated with manifestations or with complications of myocardial diseases (two pulmonary emboli and one case of jaundice) or pathology associated with it. inve ...199996761
[associated congenital pulmonary stenosis and aortic stenosis. apropos of 5 cases]. 199996770
hypertension. 199996793
phospholipid content and activity of pure uridine diphosphate-glucuronyltransferase from rat liver.rat liver phospholipids were radioactively labeled in vivo before purification of udp-glucuronyltransferase to homogeneity. the pure enzyme contained very little phospholipid (approx. 0.7 mol of phospholipid/mol of protein). the solubilization detergent lubrol 12a9 appeared to act as a phospholipid substitute, capable of supporting udp-glucuronyltransferase activity. phospholipase c did not inhibit the pure enzyme activity and pure udp-glucuronyltransferase was stimulated by 40--100% by the addi ...197896816
regulation of the in vitro synthesis of the alpha-peptide of beta-galactosidase directed by a restriction fragment of the lactose operon. 197896823
sugar binding properties of various metal ion induced conformations in concanavalin a.concanavalin a is known to undergo a first-order conformational transition when metals are added to the demetallized protein at ph 5.6 (brown, r.d., iii, et al. (1977) biochemistry 16, 3883--3896). the rate constants for this process, which wer have measured using a polarographic technique, are identical when zinc, cobalt, or manganese occupies s1 and calcium occupies s2. the reducible sugar, p-nitrophenyl alpha-d-mannopyranoside, binds only to the locked conformational structure which is formed ...199996852
differential effects of prostaglandin synthetase stimulators on inhibition of cyclooxygenase.the different effects of prostaglandin synthetase stimulators on inhibition of the cyclooxygenase by structurally distinct classes of nonsteroidal antiinflammatory agents suggest that the enzyme is altered by interaction with these stimulators. reversible stimulation of prostaglandin synthetase activity by phenols and some other compounds and the relative influence of these stimulators on inhibitors of the cyclooxygenase were determined quantitatively. two distinct classes of inhibitors were est ...197896853
[nonspecificity of antiviral protein action].the authors studied the antiviral activity of the informative rna of antiviral protein (m-rna avp) isolated from the cells following superinduction of interferon in them for the purpose of ascertaining the action specificity of the product of their translation--avp. following the administration of m-ran avp a marked (from 1 to 5 lg pfu/mil) reduction of the infectious titres was observed in the homologous and heterologous cells. rna preparations from control (noninduced) cells possessed a weak ( ...197896890
metabolism studies with practolol [proceedings]. 197896899
release of dopamine in the nucleus accumbens of rats by thyrotropin releasing hormone (trh) [proceedings]. 197896901
vitamins in intravenous feeding: a study of water-soluble vitamins and folate in critically ill patients receiving intravenous nutrition.red cell b vitamins, folate and white cell vitamin c were measured in a group of critically ill surgical patients before and following a course of intravenous nutrition. patients received a widely used vitamin supplementation regimen in the form of one ampoule of water-soluble vitamins daily and recommended doses of intramuscular folate, vitamin b12 and vitamin k weekly. this regimen was adequate to maintain tissue levels of the water-soluble vitamins and folate. patients with initially low valu ...199996904
changes in responsiveness of medial preoptic neurons to the microelectrophoresis of releasing hormones as a function of ovarian hormones. 197896913
bovine transferrin glycopeptide: the relevance of its structure to interaction with the mammalian hepatic lectin that binds asialoglycoproteins. 197896919
amino acid sequence alignment of bacterial and mammalian pancreatic serine proteases based on topological equivalences.the three-dimensional structures of the bacterial serine proteases sgpa, sgpb, and alpha-lytic protease have been compared with those of the pancreatic enzymes alpha-chymotrypsin and elastase. this comparison shows that approximately 60% (55-64%) of the alpha-carbon atom positions of the bacterial serine proteases are topologically equivalent to the alpha-carbon atom positions of the pancreatic enzymes. the corresponding value for a comparison of the bacterial enzymes among themselves is approxi ...197896920
role of pyridoxine in the metabolism of putrescine in the rat.1. the ability of rats to metabolize radioactive putrescine to 14co2 in vivo has been studied. 2. animals made deficient in pyridoxine exhibit a significantly lower rate of catabolism of the diamine. 3. there dose not appear to be an important interaction between the effects of the deficiency and those stemming from treatment of the animals with the diamine oxidase inhibitor aminoguanidine. 4. these results favour the concept of a role of pyridoxal cofactor in the metabolism of diamines, presuma ...197896921
test for differentiation of m. tuberculosis and m. bovis from other mycobacteria.a test is described for selective inhibition of mycobacterium tuberculosis and m. bovis isolates in fluid medium. the method employs rho-nitro-alpha-acetyl-amino-beta-hydroxy-propiophenone (nap) as an inhibitory agent for differentiation of mammalian tuberculosis strains from other mycobacteria.197896930
qualitative alterations in plasma esterases in balb/c mice following the administration of diethylnitrosamine.selected non-specific plasma esterases in female balb/c mice, separated by polyacrylamide gel electrophoresis, were qualitatively altered following treatment of the mice with diethylnitrosamine (den). these alterations include a decreased preference for naphthyl butyrate as a substrate relative to naphthyl acetate; decreased sensitivity to enhancement by divalent cations such as ca2+, mg2+, and mn2; and an increased sensitivity to inhibition by eserine. all esterase species affected were also qu ...199996943
[induction of sister chromatid exchanges in vivo in bone marrow cells of akr mice].induction of sister chromatid exchanges (sces) in bone-marrow cells of akr mice receiving in vivo four drugs well-known for their mutagenesis activity has been tested. a decreasing activity in sce was shown by the drugs tested in the order cyclophosphamide, procarbazine, methylmethane sulfonate and diethylnitrosamine. this technique presents an encouraging method for testing the effect of chemical agents in vivo.199996954
[effect of valinomycin on mitotic activity and ciliary movement during embryonic development].the k+ ionophore valinomycin very quickly arrests cleavage in sea urchin and mouse eggs at concentrations ranging between 10 and 3 micron. development of axolotl and xenopus eggs is not arrested before the blastula or gastrula stage. the motility of sea urchin sperm, blastulae and gastrulae is suppressed, within a few minutes, by 1-9 micron valinomycin.197896956
[effect on macrophages of acute stress induced in mice by local irradiation].in examining the role of radiation in inducing immunosuppression in tumor-bearing mice it has been shown that the experimental acute stress inadvertently generated by the procedure is profoundly immunosuppressive. it would appear that monocytes under the influence of glucocorticoïds are sequestered in the spleen. this monocyte immobilisation leads to rapid suppression of local inflammatory reactions including delayed hypersensitivity. the increased number of marcrophages in the spleen is co-inci ...199996964
[stimulation of pituitary lh and fsh secretion after immunoneutralization of endogenous substance p in the cycling rat].in the cycling female rat, administration of substance p antisera performed at noon on the proestrous day provokes a significant increase in lh and fsh serum level, right before or after the preovulatory surges, but had no effect on its occurrence or magnitude. these results suggest that substance p has a normal physiological inhibitory role in gonadotropin regulation.197896967
[renewal of noradrenaline in different zones of the central nervous system of inbred mice strains and their recombinants].a good correlation exists between the learning capacity and norepinephrine metabolism in the neocortex of c57 and balb inbred mice strains, as well as their f1 hybrids and seven recombinant inbred strains derived from their cross. the animals with a better learning performance are characterised by low levels of norepinephrine, as well as a slow metabolic rate of this neurotransmitter in the cortex. such a correlation has not been found to exist in the other cerebral regions studied.199996976
[effect of inhibitors of polyamine biosynthesis on primary differentiation of mouse egg].alpha-methylornithine, an inhibitor of the synthesis of putrescine does not affect the cleavage of mouse eggs, cultured in vitro from the 2-cell stage, before blastocyst formation, whereas methylglyoxal-bis (guanylhydrazone), an inhibitor of the syntheses of spermidine and spermine induces the embryos to become quiescent at about the 8-cell stage; resumption of their development, after transfer to fresh medium, is followed by a delay in cavitation. these results may be related to the biological ...197896982
[host-virus relationship during experimental spring viremia in carp].one-summer-old virus-free carps produce both circulating interferon and neutralizing antibodies when stored at +20 degrees c and injected intraperitonealy with 10(5), 10(6), 10(7) p. f. u. of spring viremia of carp virus per fish: kinetics and intensity of interferon production are maximum for the highest virus imput (fig.) and neutralizing antibodies are present in most of the fish 2 1/2 months post infection (table).197896984
[functional study of the rat olfactory bulb by a 14c-2-deoxyglucose autoradiographic technic].the autoradiographic method has been used in the rat to map active regions in the olfactory bulb after a pulse of 14c-2-deoxyglucose with electrical stimulation of the lateral olfactory tract. the highest optical densities were found at the external plexiform, mitral, internal plexiform and granular layers; the lowest was found in the glomerular layer.197896988
[contribution of divalent cations to the maintenance of membrane potentials in the oocytes of pleurodeles waltlii michah (amphibia, urodela)].when the external concentration of ca and mg is changed, the oocyte membrane potential, in the urodela amphibian: pleurodeles waltlii, is not significantly modified. the addition of chelator agents, egta and edta in ca, mg free steinberg solution promotes a membrane depolarisation and the rise of membrane conductance. it is concluded that divalent ions ca++ and mg++ are needed to maintain a potential difference between internal and external medium of the oocyte.199996993
[binding of 3,3',5'-triiodo-l-thyronine (rt3) to human serum proteins].the rt3-binding and human serum proteins was directly studied with tracer doses of radioactive rt3. polyacrylamide gel electrophoresis showed 125i-rt3 added to human serum was distributed among two proteins: albumin (carrying 57% of tracer rt3) and tbpa )22%). no binding was observed to tbg, protein binding t4.197896994
[effect of bromocriptine on the "prolactin-like cell" of nectophrynoides occidentalis (amphibia, viviparous anura): optical and electronic microscopical studies].bromocriptin has an effect on prolactin-like cells of nectophrynoïdes occidentalis. 16 days after delivery, these cells are fully active in normal animals. retention of secretory granules and myelinic formations have been observed in the prolactin-like cells of females treated by cb 154.199997001
recent developments in diabetes research. 199997046
external neuroanatomy of old world monkeys (cercopithecoidea). 197897050
picosecond detection of bchl-800 as an intermediate electron carrier between selectively-excited p870 and bacteriopheophytin in rhodospirillum rubrum relaction centers. 197897097
coagulation changes following vasectomy: a study in primates.thirty vasectomized rhesus monkeys were tested for changes in coagulation factors that might reflect an increased incidence of thrombosis. the results of tests on these monkeys were compared with results of tests on 18 control rhesus monkeys; there were no significant differences between control and vasectomized animals for any of the parameters tested. one vasectomized animal had increased levels of fibrin monomer in his plasma on repeated samples, but no evidence of thrombosis on postmortem ex ...197897098
the neurological manifestations of chronic inhalation of leaded gasoline.abnormal neurological signs were found in 46 of 50 children and adolescents chronically sniffing leaded gasoline. these abnormalities resolved within eight weeks in all but one case. exaggerated deep reflexes, postural tremor and evidence of cerebellar dysfunction occurred in a highly significnat number of patients. forty-nine had blood lead levels greater than or equal to 40ug/dl. the mean blood lead levels were significantly higher in those with (a) abnormally brisk deep reflexes and (b) with ...200097111
[intraluminal diverticulum of the duodenum. report of a case and review of published cases].the intraluminal diverticulum of the duodenum is very rare; it is an anatomical sac like formation, located in the interior of the duodenum and communicating with it through an orifice situated a the upper pole of the diverticulum where the wall is covered by mucosa on both faces. it has interesting etiopathogenic problems. we present an observation after reviewing the corresponding literature. it was a 32-year old woman suffering from moderate epigastric pains, pyrosis, chronic constipation, ma ...200097140
[digestive reconstruction after proctocolectomy]. 200097145
[decrease in the mutagenic effect of thiophosphamide from the action of a xyethylidene diphosphonic acid derivative]. 200097173
[comparative nutrition studies on 4 l-amino acid solutions in 25 metabolically healthy adults under conditions of total parenteral alimentation]. 200097219
demonstration of k88ac and k88ab antigens of escherichia coli by means of immunoelectrophoresis and immunodiffusion.five strains of escherichia coli were tested for the presence of the k88ac or k88ab antigens by immunoelectrophoresis and immunodiffusion. the k88ac antigen of 0a2 and sojka abbotstown gave an anodic line in the immunoelectrophoresis test and a line in immunodiffusion with homologous k88ac antisera. the k88ab antigens of 0g7, 0e68, and moon 263 also gave anodic lines in immunoelectrophoresis, and were detectable by immunodiffusions. the 0 groups of these strains were also demonstrated by immunoe ...197897237
hyponatremia. 200097245
nonrebreathing valve for spontaneously breathing or mechanically ventilated animals.the design of a small dead space, nonbreathing valve suitable for use in small laboratory animals is presented. the design overcomes previous problems of condensation occurring at valve leaflets, and allows ongoing collection of expired gases should the animal require mechanical ventilation. the valve apparatus performs reliably when in operation for several hours at a time with a variety of small animals.197897251
role of exotoxins in bacterial pathogenicity. 197897256
dichroism of bacteriochlorophyll in chromatophores of photosynthetic bacteria.the dichroism was measured in films of air-dried and, consequently, flattened chromatophores of chromatium vinosum, rhodopseudomonas sphaeroides and rhodospirillum rubrum. the values (deltaa/a) of dichroism in c. vinosum were found to be -1.05 at 590 nm and 0.75 in the near infrared region. the values of dichroism in r. sphaeroides were -0.70 at 590 nm and 0.80 at 870 nm. the values of dichroism in r. rubrum were -1.45 at 590 nm and 0.97 at 870 nm.197897281
immunological purification of sea urchin egg tropomyosin.the antiserum against lantern muscle tropomyosin of the sea urchin was prepared, and the presence of tropomyosin in the sea urchin egg was shown by immunodiffusion test between the antiserum and the egg tropomyosin fraction which was prepared according to the purification method for muscle tropomyosin. the sea urchin egg tropomyosin was isolated from the immuno-precipitate formed between the antiserum and the egg tropomyosin fraction. the subunit molecular weight of the egg tropomyosin was calcu ...200097282
amino acid sequence of beta-galactosidase. v. isolation and sequences of chymotryptic peptides.the amino acid sequence of 72 chymotryptic peptides isolated from 14c-, 3h-labeled carboxymethyl-beta-galactosidase has been determined. a variety of techniques were used in the isolation procedures including separation by solubility, size, and ion exchange and paper chromatography. these peptides contain approximatley 500 amino acids, range in size from 2 to 26 residues, and give overlaps with tryptic peptides of 16 to 55 residues. peptides from this digest and those reported earlier from trypt ...197897293
discrepancy between results of the streptozyme test and those of the antideoxyribonulcease b and antihyaluronidase tests.comparison of the serum titers obtained with the streptozyme, the antistreptolysin o, the antideoxyribonuclease b, and the antistreptohyaluronidase tests suggested that the streptozyme test had failed to detect antibodies against streptococcal deoxyribonuclease b and hyaluronidase. moreover, sera that were negative in the streptozyme test could be shown by immunodiffusion to possess significant numbers of precipitins against extracellular factors produced by group a streptococci. follow-up studi ...197897311
determination of fetal sex by ultrasound. 200097313
effect of experimentally induced marginal periodontitis and periodontal scaling on the dental pulp.experimental breakdown of the periodontal attachment apparatus was produced in six young adult monkeys to study the effect on the tissue of the dental pulp by (1) periodontitis, (2) scaling and plaque accumulation on exposed root dentin. periodontal tissue breakdown was induced by the placement of ligatures around the neck of 92 permanent teeth. subsequent plaque formation caused marked loss of periodontal tissue support, which after a period of 5--7 months amounted to 30--40% of the root length ...197897332
scanning electron microscopic observations of the development of the somites and their innervation in anuran larvae.the development of the paraxial mesoderm in tadpoles of xenopus, bufo and rana was observed with a scanning electron microscope. in addition to examination of the differentiation of the surface and the interior of the somites, some attention was also paid to the transformation of the material of the neural crests and to the innervation of the developing myotome.200097358
meningitis caused by neisseria meningitidis type w-135. 197897374
ocular manifestations of phycomycosis in a diabetic. 200097389
weight, height and arm circumference of a group of low income esfahan children. 200097397
effects of ethylenediaminetetraacetic acid-4 sodium solution on the surface of renal calculi and the uroepithelium.tetrasodium ethylenediaminetetraacetic acid is one of the most effective agents that dissolve renal calculi, especially calculi containing calcium. to study the dissolving process of calculi in solutions, with or without trypsin, serial thin sections of renal calculi composed of calcium oxalate and/or phosphate were prepared and observed by polarizing microscopy. the effects of the solution on the surface of human renal calculi and rat uroepithelium also were studied by scanning electron microsc ...197897399
deep vein thrombosis. 200097405
the results of basal and post pentagastrin gastric secretory studies in apparently healthy subjects, a preliminary communication.pentagastrin stimulated gastric secretory studies were carried out in 26 apparently healthy subjects. each specimen of gastric juice was analysed for volume, ph, total acidity and major electrolytes. the data was analysed and compared with other published reports.200097409
the elemental diet. 200097415
intrafamilial spread of hepatitis bs antigen. 200097419
[a desire for better nursing - hardship and problems shared by fellow nurses]. 200097446
[importance of close observation of the patient and confirmation of the findings]. 200097450
[emergency care and nursing. 17. tetanus, gas gangrene, foreign bodies, drowning, and electrocution]. 200097454
[profile of a nurse: ms. makiko nemoto, a young nurse trained in a seventh day adventists' school]. 200097456
[results of early nutrition of newborn infants with low birth weight. ii. effects of early nutrition on bilirubin metabolism of newborn infants with birth weights from 1501 to 2000 g]. 197897464
[clinical biochemical aspects of the prophylaxis and therapy of senile cataract with zinc aspartate (author's transl)].in the aetiology and pathogenesis of senile cataract a disturbed glucose utilisation is found. this reflects a loss of activity of some key enzymes for glycolysis in the lens. these enzymes (ald, g6pdh, hk, ldh, mdh and phosphofructokinase) are zinc metal enzymes. the decrease in activity of these enzymes can be compensated by the administration of specific cations. with zinc one can improve the impaired glucose metabolism occurring in old age. for the prophylaxis and therapy of senile cataract ...200097466
unique behavioral effects of beta endorphin and their relationship to thermoregulation and hypothalamic function. 197897480
Displaying items 301 - 400 of 11070