| semicarbazide-sensitive amine oxidase in rat aorta: a plasma-membrane enzyme [proceedings]. | | 1979 | 93954 |
| a developmental model for studying choline acetyltransferase transport in chick motoneurons. | the proximodistal axonal transport of choline acetyltransferase (chac) has been studied in the chick sciatic nerve in the absence of any experimental manipulation. the phenomenon utilized by us is a physiological transient fall in the activity of chac. this fall occurs in most areas of the chick central nervous system after hatching, and moves toward the periphery along the nerves. having ruled out the presence of transient inhibitors, the movement of the fall towards skeletal muscles has been c ... | 1979 | 94010 |
| diet composition and insulin effect on amylase to lipase ratio in pancreas of diabetic rats. | in man and in rat, the diabetic state is associated with diseases of exocrine pancreatic function. in this work, streptozotocin diabetes was shown to lead to a 95% decrease in the amylase to lipase ratio in rats. diabetes was reversed by either pancreas transplantation or insulin treatment. transplantation of neonatal pancreases was successful in reversing the diabetic-induced alterations of exocrine pancreatic function. to assess whether insulin acts directly on the exocrine pancreas, or throug ... | 1979 | 94021 |
| conversion of androstenedione to estrone in human fibroblasts cultured from prostate, genital and nongenital skin. | | 1979 | 94031 |
| antigenicity of casein enzymatic hydrolysate. | an enzymatic hydrolysate of bovine casein were studied for molecular size and antigenic properties. as determined by sephadex g-25 gel filtration, polypeptide fractions having molecular weights greater than 1,000 were not detected in the soluble fraction of the casein hydrolysate. antigenicity of the fraction was not detected by heterologous passive cutaneous anaphylaxis in guinea pig-rabbit antiserum system mediated by immunoglobulin g types of antibody (guinea pig passive cutaneous anaphylaxis ... | 1979 | 94065 |
| correlation between morbidity and the level of serum antibodies and virus-neutralizing inhibitors in different influenza a/hong-kong epidemics. | | 1979 | 94079 |
| structure of the rna portion of the rna-linked dna pieces in bacteriophage t4-infected escherichia coli cells. | | 1979 | 94107 |
| [existence of r-protein antigens in group f streptococcal cells.--investigation with cells of group f streptococcal reference stain o'mahoney (colindale)]. | | 1979 | 94109 |
| antifetal and tumor-specific reactivity in human osteosarcoma. | | 1979 | 94187 |
| induction of delayed-type sensitivity to leishmania parasite in a case of leishmaniasis cutanea diffusa with bcg and cord-factor (trehalose-6-6' dimycolate). | the delayed hypersensitivity against the leishmania parasite was restored to a patient who had suffered from diffuse cutaneous leishmaniasis (dcl) for 26 years, by the application of an ointment containing heat-killed and lyophilized bcg and cord-factor (trehalose-6-6'-dimycolate) after stripping the affected and adjacent areas with scotch-tape. | 1979 | 94221 |
| cross-reactions between haemophilus influenzae and nineteen other bacterial species. | forty-one different antigens were demonstrated in an antigen preparation obtained by sonication of a haemophilus influenzae (h. influenzae) type b strain, using crossed immunoelectrophoresis and antiserum obtained from rabbits. antigens were characterized by absorption experiments with whole heat-killed bacteria, temperature resistance and protein and polysaccharide staining. cross-reactions between h. influenzae type b and 19 other bacterial species were studied by various quantitative immunoel ... | 1979 | 94235 |
| crossed immunoelectrophoretic analyses of antigens from trypanosoma lewisi and trypanosoma musculi. | | 1979 | 94319 |
| chlamydia psittaci: growth characteristics and enumeration of serotypes 1 and 2 in cultured cells. | the growth characteristics of chlamydia psittaci serotypes 1 and 2 (ovine and bovine origin) were studed in mouse l cells. formation of inclusions and yield of infectious progeny for serotype 1 were maximal when host cells were treated with cycloheximide and the ph in the cell culture medium was 7.2-7.4. the number of cells that contained inclusions and the infectivity yield for serotype 2 were maximal when the ph was 6.6-7.0. treatments with diethylaminoethyl dextran and cycloheximide increased ... | 1979 | 94339 |
| comparative studies on ls antigens induced by vaccinia and cowpox viruses. | the constituents of ls antigen from cells infected with vaccinia virus and with cowpox virus were compared by immunoprecipitation and sds-polyacrylamide gel electrophoresis (sds-page). antiserum to the ls antigen from cells infected with vaccinia virus reacted with at least five polypeptides in cells infected with either virus. four of these polypeptides were similar sizes in cells infected with the two viruses. however, one major polypeptide with a mol. wt. of about 100 000 (100 k) detected in ... | 1979 | 94351 |
| time courses of carbachol-induced responses in guinea pig atria under the influence of ouabain, calcium, and rate of stimulation. | the response of isolated left atria of guinea pigs to carbachol was measured in the presence and during washout of the drug. the time courses of the negative inotropic effect and of the rate of shortening in action potential duration were compared. the initial rapid decline in force of contraction was followed by a slowly developing partial recovery (fading). after removal of the drug, a transient phase of hypercontractility was observed before the control level was reached again. in contrast to ... | 1979 | 94392 |
| effects of subminimal inhibitory concentrations of ampicillin, chloramphenicol, and nitrofurantoin on the attachment of escherichia coli to human uroepithelial cells in vitro. | an in vitro system with epithelial cells of the human urinary tract and escherichia coli isolated from the urine of pateints with acute pyelonephritis was used for tests of the effect of antibacterial agents on bacterial adhesion. e. coli treated with subminimal inhibitory amounts of ampicillin attached less than untreated control bacteria. subminimal inhibitory amounts of chloramphenicol and nitrofurantoin had no effect on adhesion of the 15 strains of e. coli tested. the combination of bacteri ... | 1979 | 94452 |
| the rate of movement of [3h]-water and [14c]-dextran into the gingival sulcus of the rabbit. | | 1979 | 94543 |
| acute and chronic beta-receptor blockage with propranolol and the cardiovascular responses to intravenous sodium nitroprusside in the conscious rabbit. | sodium nitroprusside infused intravenously into conscious rabbits lowered blood pressure and raised heart rate and plasma noradrenaline. acute beta blockade with propranolol, 2 mg/kg/hr i.v. for 2 hr, increased resting plasma noradrenaline and did not change the hypotensive effects of nitroprusside or the rise in plasma noradrenaline but attenuated the increase in heart rate. chronic treatment with propranolol, 2 mg/kg twice daily for 3 weeks, did not modify the cardiovascular or reflex effects ... | 1979 | 94618 |
| hla types in corneal diseases. | evaluation of the results of hla typing of 187 patients grouped into herpetic keratitis (37), non-herpetic keratitis (43), keratoconus (42), endothelial dystrophy (23), stromal dystrophy (13), lues (5), and injuries (24), failed to show convincing deviations in any of the groups from a normal control series (2900 persons). yet, as for the herpes group, a rise in b5 must strongly be suspected. the data are presented and possible implications are discussed. | 1979 | 94740 |
| glucose and phosphorus utilization by two dermatophytes. | trichophyton mentagrophytes and aspergillus fumigatus dissimilated glucose through emp pathway. oxygen and inorganic phosphorus were found to control the rate and extent of glucose metabolism. | 1979 | 94752 |
| determinants of 5-phosphoribosyl-1-pyrophosphate (prpp) synthesis in human fibroblasts. | | 1979 | 94761 |
| [comparative study of 5 alpha-reductase activity in the prostate and the human scalp]. | | 1979 | 94780 |
| a research on the action of testosterone propionate and of ciproterone acetate on the mouse-killing behaviour of the adult rat. | data demonstrate exactly that testosterone favour above all the killing behaviour of castrate males at birth in comparison with control males while ciproterone acetate turns out to be more effective in diminishing the killing behaviour of males having integral testicle and of androgenized females at birth in comparison with castrated males. the results point out that the killing behaviour of rats is affected by the presence of testosterone in the first days of life, and in the grown-up animal. | 1979 | 94826 |
| chromatography of non-human albumins on cibacron blue-agarose. application to the separation of albumin from rat alpha-fetoprotein. | | 1979 | 94917 |
| [histochemical changes of intestine epithelium cells of a rat during hipervitaminosis a (author's transl)]. | | 1978 | 94985 |
| histochemical studies of mucosubstances and keratins of thymic corpuscles. | keratin and prekeratin have been visualized histochemically by testing the reactivity of disulfide groups in the thymic corpuscles of the sheep. rhesus monkey, rabbit and dog, and the reactivity of sulfhydryl groups in the sheep, rhesus monkey, rabbit and rat. ten to 50% of the thymic corpuscles showed keratinization by this method. acidic mucosubstances were visualized histochemically in the rhesus monkey, sheep and rat but not in the rabbit. staining for vic-glycol groups was prominent in all ... | 1979 | 94996 |
| purification of mouse interferon by sequential chromatography. | two schemes for the purification of mouse interferon are described, based on the concerted application of various physicochemical and affinity/adsorption column chromatographic techniques. mouse interferon was purified to a final specific activity of 1.0--8.0 x 10(8) units/mg when first precipitated with ammonium sulphate and further processed by hydrophobic chromatography and adsorption chromatography on affi-gel 202 and controlled pore glass. it was purified to a final specific activity of 2.5 ... | 1979 | 95020 |
| comparison of antigenic properties among various strains of treponema hyodysenteriae. | agglutinin-absorption and precipitin-absorption studies demonstrated that three strains of treponema hyodysenteriae isolated from cases of swine dysentery were antigenically different from each other and also from a spirochete isolated from a clinically normal dog. each of the strains of t. hyodysenteriae also possessed two common antigens. | 1979 | 95077 |
| relationship between glucan-induced agglutination and glucan-binding ability of actinomyces viscosus cells. | | 1979 | 95122 |
| [structural and immunochemical studies of carp (cyprinus carpio l.) immunoglobulin. v. tryptic fragments of carp (cyprinus carpio l.) immunoglobulin m]. | carp igm, isolated from normal serum is more sensitive to trypsinization compared to a human myeloma protein igmgo. under the same conditions (treatment with trypsin at 56 degrees c for 30 min) carp igm was degraded to small, mostly dialysable peptides to a larger extent than igmgo. in both cases the fragmentation resulted in immunoelectrophoretically pure fab mu and fc mu fragments. the fab mu fragments of human igm (yield: 20% of used igm material) had a molecular weight of 54,000, the fc mu f ... | 1979 | 95144 |
| antigenic similarity between squamous cell carcinoma of horn (horn cancer) and normal bovine foetal tissues. | normal bovine foetal (liver and skin) and horn cancer tissue antigens were examined using double diffusion agar gel precipitation and immuno-electrophoretic tests to detect any cross reactivity among them. rabbit horn cancer antisera absorbed with normal bovine liver, skin and horn core epithelium antigens, when tested with foetal skin and liver (4 to 6 months of gestation), revealed the presence of 2 foetal antigens in horn cancer. immuno-chemically 2 of the horn cancer antigens were found to b ... | 1979 | 95358 |
| [antitumor activity and preclinical pharmacologic evaluation of pingyangmycin (author's transl)]. | | 1979 | 95444 |
| [effects of ddt and aldrin on swine cell line ib-rs-2]. | swine cells ib-rs-2 were exposed to 0,1-100 microgram/ml medium of ddt and aldrin for 48 hours. the data obtained showed that both compounds decreased cell growth. this effect depends on the concentration and on the time of cell exposition to the insecticides. these compounds also decreased the levels of cellular protein, rna and dna. the degrees of changes with aldrin were less than with ddt. | 1979 | 95479 |
| pancreatic dysfunction in viral hepatitis. | | 1978 | 95539 |
| [morphological and histoenzymatic changes in the white rat testis after long-term administration of low doses of lindan and trichlorfon (author's transl)]. | | 1979 | 95555 |
| molybdenum independence of nitrogenase component synthesis in the non-heterocystous cyanobacterium plectonema. | the cyanobacterium plectonema boryanum (iu 594-utex 594) fixes n2 only in the absence of combined n and of o2. we induced nitrogenase by transfer to anaerobic n-free medium and studied the effect of mo starvation on nitrogenase activity and synthesis. activity was first detected within 3 h after transfer by the acetylene reduction assay in controls, increasing for at least 25 h. cells grown on nitrate and mo and then transferred to n-free, mo-free medium produced 8% of the control nitrogenase ac ... | 1978 | 96092 |
| dietary restrictions early and late: effects on the nephropathy of the nzb x nzw mouse. | nzb x nzw f1 mice initiated on calorie restriction at weaning or at 4 to 5 months of age or initiated on moderate protein restriction at weaning, were afforded significant protection from the development of immune nephritis. whereas animals on normal calorie intake demonstrated deposition of immune reactants in glomerular basement membrane-oriented pattern, those on either protein or calorie restriction exhibited mesangial confinement of immunoglobulins and complement. associated with these dive ... | 1978 | 96299 |
| [exolipases of some pseudomonas species]. | the production of exolipase was studied in various pseudomonas species, most of which did not possess the lipolytic activity in the conditions of the experiment, whereas in some strains this activity was rather high. the highest activity was displayed by the pseudomonas fluorescens 533 strain and its mutant obtained upon uv irradiation. lipase biosynthesis depended on the composition of a growth medium, the highest lipolytic activity being found on media with a high content of complex organic su ... | 1978 | 96317 |
| 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 ... | 1978 | 96466 |
| 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 ... | 1978 | 96475 |
| response of a rat rhabdomyosarcoma to neon- and helium-ion irradiation. | | 1978 | 96481 |
| haplotype designations of various strains of guinea pigs. | | 1978 | 96556 |
| [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, ... | 1978 | 96558 |
| [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 ... | 1978 | 96572 |
| terminal redundancy of "high frequency of recombination" markers of bacillus subtilis phage spo1. | | 1978 | 96587 |
| development of visual acuity in infant monkeys (macaca nemestrina) during the early postnatal weeks. | | 1978 | 96592 |
| clinical relevance of the liver-specific lipoprotein (lsp). | | 1978 | 96648 |
| 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 ... | 1978 | 96685 |
| 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 ... | 1978 | 96707 |
| alertness, level of activity, and purposive movement following somatosensory deafferentation in monkeys. | | 1977 | 96722 |
| 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 ... | 1978 | 96727 |
| 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 ... | 1978 | 96816 |
| regulation of the in vitro synthesis of the alpha-peptide of beta-galactosidase directed by a restriction fragment of the lactose operon. | | 1978 | 96823 |
| 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 ... | 1978 | 96853 |
| [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 ( ... | 1978 | 96890 |
| metabolism studies with practolol [proceedings]. | | 1978 | 96899 |
| release of dopamine in the nucleus accumbens of rats by thyrotropin releasing hormone (trh) [proceedings]. | | 1978 | 96901 |
| changes in responsiveness of medial preoptic neurons to the microelectrophoresis of releasing hormones as a function of ovarian hormones. | | 1978 | 96913 |
| bovine transferrin glycopeptide: the relevance of its structure to interaction with the mammalian hepatic lectin that binds asialoglycoproteins. | | 1978 | 96919 |
| 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 ... | 1978 | 96920 |
| 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 ... | 1978 | 96921 |
| 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. | 1978 | 96930 |
| [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. | 1978 | 96956 |
| [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. | 1978 | 96967 |
| [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 ... | 1978 | 96982 |
| [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). | 1978 | 96984 |
| [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. | 1978 | 96988 |
| [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. | 1978 | 96994 |
| external neuroanatomy of old world monkeys (cercopithecoidea). | | 1978 | 97050 |
| picosecond detection of bchl-800 as an intermediate electron carrier between selectively-excited p870 and bacteriopheophytin in rhodospirillum rubrum relaction centers. | | 1978 | 97097 |
| 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 ... | 1978 | 97098 |
| 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 ... | 1978 | 97237 |
| 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. | 1978 | 97251 |
| role of exotoxins in bacterial pathogenicity. | | 1978 | 97256 |
| 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. | 1978 | 97281 |
| 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 ... | 1978 | 97293 |
| 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 ... | 1978 | 97311 |
| 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 ... | 1978 | 97332 |
| meningitis caused by neisseria meningitidis type w-135. | | 1978 | 97374 |
| 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 ... | 1978 | 97399 |
| [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]. | | 1978 | 97464 |
| unique behavioral effects of beta endorphin and their relationship to thermoregulation and hypothalamic function. | | 1978 | 97480 |
| increased vasodepressor effect of prostaglandins a1 and e1 in renal hypertensive rabbits. | | 1978 | 97482 |
| the preparation and use of antibodies as diagnostic biochemical probes. | | 1978 | 97493 |
| [multiplication of bdellovibrio bacteriovorus in the cytoplasm of the bacterial host]. | the bacterial parasite bdellovibrio bacteriovorus was studied in the process of its interaction with the host bacterium pseudomonas fluorescens. as has been shown by time-lapse microcinematography, along with the normal growth of b. bacteriovorus in the periplasmatic space of the host bacterium, occasionally (4--5%) the parasite is located in the cytoplasm where the complete stage of its intracellular growth takes place with the release of progeny. | 1978 | 97504 |
| functional specialisation in the visual cortex of the rhesus monkey. | anatomical and functional studies of the visual cortex of the rhesus monkey have shown that it is made up of a multiplicity of distinct areas. these seem to be functionally specialised to analyse different features of the visual environment. | 1978 | 97565 |
| biological influence of fat intake on mammary cancer and mammary tissue: experimental correlates. | | 1978 | 97651 |
| [method of rapid determination of the cord factor in the mycobacterium colonies on solid nutrient medium]. | | 1978 | 97660 |
| [virulence of h37rv cultures treated with mycobacteriophages]. | | 1978 | 97663 |
| helical bacillus subtilis macrofibers: morphogenesis of a bacterial multicellular macroorganism. | helical bacterial macroorganisms have been produced by the selection of appropriate bacillus subtilis mutants and the establishment of specific growth conditions. threadlike fibers ranging in length to approximately 1 cm are produced in fluid culture by the parallel association of many division-suppressed filaments in helical arrangement. a more open ball-like structure of complicated woven architecture may also be produced. macrostructure morphology is regulated by genetic, physiological, and n ... | 1978 | 97671 |
| relationship between the blood concentration of the drug and its cumulative effect: a pharmacokinetic analysis of the nephrotoxic action of gentamicin and streptomycin. | the general principle of dependence of cumulative effects on drug concentration in the blood is proposed. the registered response is regarded as a result of the dual effect of drug blood level and duration of action. the corresponding experimental design consists in maintaining the serum concentration values at several definite levels and determining the response values for each of them. the constant serum level of the drug could be achieved by means of continuous infusion calculated according t ... | 1978 | 97679 |
| effects of learned safety and tolerance on alcohol consumption by the rat. | evidence is presented that learned safety increases the rat's willingness to drink ethanol: induction of tolerance to ethanol following learned safety training produces a further increase. rats with chronically implanted intragastric fistulae consumed substantially more (30%) alcohol when aversive post-ingestional effects were minimized by draining stomach contents during drinking than did rats allowed to retain stomach contents. half the rats from each group were then made tolerant by prolonged ... | 1978 | 97706 |
| the reinforcing property of ethanol in the rhesus monkey ii. some variables related to the maintenance of intravenous ethanol-reinforced responding. | | 1978 | 97716 |
| tropical diseases. | | 1977 | 97727 |
| radionuclide emission computed tomography of the body of laboratory animals. | selective studies in the monkey and baboon demonstrate the normal physiologic distribution of 99mtc radiopharmaceuticals using single-photon emission computed tomography. the cases demonstrated the ability of the cleon transverse section brain imager tm to do emission computed tomography of various organs. this experience shows what can be expected when equipment for emission computed tomography of the body becomes available for patient studies. | 1978 | 97732 |
| [reservoirs and wild vectors of trypanosoma cruzi. lxviii: infection of mammals by oral route]. | | 1978 | 97735 |
| benign meningococcemia in childhood. a report of five cases with clinical and diagnostic remarks. | five children aged 1/2--10 years with benign meningococcemia are reported. the clinical picture was quite uniform: good general condition, spikes of fever, skin eruptions as maculopapules--sometimes haemorrhagic, appearing in association with febrile periods, and arthralgia (big joints). the diagnosis involves either isolation of meningococci (mc) from blood, demonstration of mc with immunofluorescence in skin eruptions, or a significant elevation of mc antibody titre in connection with typical ... | 1978 | 97774 |
| isolation care of infection-prone burn patients. | an experimental and clinical study of spread of colonisation between burn patients, and their susceptibility to infection, was performed. burn patients' polymorphonuclear neutrophil granulocytes (pmn) functioned poorly, particularly during the second week after injury which coincided with maximum growth of bacteria in the burn wound. patients with large burns often dispersed s. aureus and ps. aeruginosa but also beta-hemolytic streptococcus to the air of their rooms. airborne transfer of these b ... | 1978 | 97776 |
| detection of antibodies against echinococcus granulosus arc 5 antigens by double diffusion test. | this report deals with an evaluation of a double diffusion (dd5) test which employs a control antiserum against echinococcus granulosus arc 5 antigens to recognize arc 5-positive sera by a reaction of identity. the dd5 test was more sensitive than the immuno-electrophoresis (iep5) test based on the same positivity criterion and was equally specific for the immunodiagnosis of human hydatidosis. its greater simplicity suggest its application as a substitute for the iep5 test in diagnosis, particul ... | 1978 | 97814 |
| post-mortem diagnosis of chronic chagas's disease comparative evaluation of three serological tests on pericardial fluid. | in an attempt to improve the post-mortem diagnosis of chagas's disease the authors performed haemagglutination tests (hat), fluorescent trypanosoma cruzi antibody tests (fat), and complement fixation tests (cft) on the pericardial fluid obtained at autopsy of 50 individuals with chagas's heart disease, and 93 patients in whom this disease was not thought to be present. the results demonstrate that all three tests are efficient for the post-mortem diagnosis of chagas's disease but suggest that th ... | 1978 | 97817 |