| the serological reactions of mycoplasma isolated from pneumonic sheep lungs in the sudan. | seven mycoplasma isolated from pneumonic sheep lungs were found to belong to two serologically unrelated groups. isolates in one group reacted strongly with antisera to m arginini in the metabolic inhibition and growth inhibition tests. all isolates except one failed to react with antisera to m mycoides var capri or m mycoides var mycoides. the results of the present work support the previously reported division of the isolates into two groups on the basis of their biological properties. | 1978 | 97739 |
| immunohistochemical characterization of burkitt's lymphoma. | cytoplasmic immunoglobulins and muramidase (lysozyme) were demonstrated in formalin-fixed tissues by an immunoperoxidase procedure in 3 cases of burkitt's lymphoma. the burkitt cells were strongly positive with the full panel of monospecific antisera against human immunoglobulin components (kappa and lambda light chains, gamma, alpha and micron heavy chains). the 'starry-sky' macrophages were weakly positive with antimuramidase antiserum and strongly positive with the antisera against immunoglob ... | 1978 | 97795 |
| [passage of endogenous urea into a jejunum of sheep]. | the quantitative passage of urea-n and ammonia n into an isolated jejunum of the merino sheep was studied within one hour before, and 1, 2, 3, 4 and 5 hours after feeding. the total amount of ammonia-n that passes to the isolated jejunum [to both proximal and distal part] within an hour is small [0.28-0.35 mg h-1], without any significant differences in passage prior to and after feeding. however, urea-n secretion is high, especially secretion to the fore part of the jejunum [ 3.35-3.62 mg h-1 ... | 1978 | 97837 |
| [distribution of the rabies virus in the central nervous system of naturally infected foxes]. | quantitative distribution of rabies virus and the character of immunofluorescence in various parts of the central nervous system [cns] and salivary glands were investigated in 21 naturally infected foxes. a mean death period was recorded in mice infected with the virus obtained from various parts of the cns and salivary glands of the investigated foxes. the highest average titer of the virus was found out in the salivary glands - 4.46 log mld50 per 0.03 ml i. c. the average titer was 2.30 log in ... | 1978 | 97842 |
| [sarcocyst resistance to certain factors]. | | 1978 | 97852 |
| the pattern of sporulation in anabaena circinalis and comments on the role of heterocysts in sporulation in blue-green algae. | cells between two intercalary heterocysts differentiate at random into spores in a. circinalis. one or more cells, which fail to transform into spores, are present between the two adjacent spores, and these cells disorganize later. a critical c:n ratio regulates sporulation and heterocyst formation. during sporulation the reductive ability of the heterocyst gradually diminishes. it is concluded on the basis of this and other evidence that sporulation is regulated by interactions between heterocy ... | 1978 | 97869 |
| uptake of [14c]-aflatoxin b1 by liver and kidney slices of different animal species. | uptake of aflatoxin [14c]-b1 by the liver and kidney slices of different animal species clearly indicates that the transport of the toxin to different organs of the respective species is not the major cause for the reported variation in the species susceptibility to aflatoxin. | 1978 | 97879 |
| [an index of blood neutrophil injury in man and animals immunized with live anthrax vaccine]. | the authors present the results of study of the blood neutrophil injury in guinea pigs, rabbits, monkeys, and also humans inoculated subcutaneously with live anthrax vaccine. along with intradermal test with anthraxin, the mentioned test is suggested to assess the immunological status of persons immunized with anthrax vaccine. | 1978 | 97884 |
| [prospects for the use of blood substitutes made in the ussr with the expired date of validity]. | as revealed, blood substitutes--aminopeptide, caseine hydrolysate, and hydrolysine with the expired date of validity could be used as the basis of nutrient media for the cultivation of bacteria. bacterial growth proved to be the optimum in addition to the blood substitutes of a 0.25--0.5% of yeast extract. | 1978 | 97885 |
| biochemistry and immunochemistry of membrane-bound enzymes. | membrane-bound enzymes have certain specific differences compared with soluble enzymes. membrane-binding often enables greater catalytic activity of associated enzymatic reactions, their regulation by low molecular weight substances (substrates and allosteric effectors, hormones) and compartmentation, etc. on the other hand, the binding of enzymes to membranes causes considerable difficulties as regards their isolation and the determination of their homogeneity and substrate specificity. membran ... | 1977 | 97930 |
| development of the brush border enzymes of guinea pig and rat enterocytes. | | 1977 | 97934 |
| chymotrypsinlike activity of some intestinal bacteria. | some tests of exocrine pancreatic function are based on the estimation of intestinal chymotryptic activity by using specific substrates such as n-benzoyl-l-tyrosyl-paba (bt-p). in this study the action of a number of bacteria isolated from human or monkey intestines on bt-p was investigated. the monkeys studied had an intestinal flora closely resembling that of man. except for bacteroides, proteus vulgaris no. 73, proteus morgani no. 202, and pseudomonas aeruginosa no. 76, significant splitting ... | 1978 | 98039 |
| relative femoral head size in early hominids. | relative growth of the human femur head is studied by a logarithmic principal components method. growth rates differ according to the population sampled and the other body dimensions being compared, and especially according to sex. the results do not support biomechanical assumptions of strongly positive allometry of the femur head, which have been used to argue that the australopithecine hip joint was not relatively small. | 1978 | 98052 |
| immunoglobulin concentration in treated human acute chagas disease. a follow-up study. | immunoglobulin m, g, and a concentrations were studied by radial immunodiffusion technique in 16 individuals (two were 16 and 14 yr of age, respectively, while the remaining 14 uere 15 yr of age or less) with acute trypanosoma cruzi infection. serum samples were obtained from these patients beginning with the onset of symptoms and continuing until several months after treatment with nifurtimox was completed. soon after infection the concentration of igm was higher than the average found in healt ... | 1978 | 98063 |
| purification of a specific antigen of trypanosoma cruzi from culture forms. | a monospecific rabbit antiserum was prepared against a specific component of tryanosoma cruzi epimastigote culture forms (designated antigen 5). rabbits were immunized intradermally in 30-50 sites with the zone of agarose gel in which the component 5:anti-5 complex was visualized after two-dimensional immunoelectrophoresis. with this appropriate antiserum and the total epimastigote soluble extracts, the specific component of t. cruzi was purified by immunoadsorption. purity and specificity contr ... | 1978 | 98064 |
| synthesis and biological properties of prostaglandin endoperoxides, thromboxanes and prostacyclins. | | 1978 | 98074 |
| activity of three 8-hydroxyquinoline derivatives against in vitro dental plaque. | three 8-hydroxyquinoline derivatives, assessed using an in vitro preformed dental plaque model system, were differentially inhibitory for four plaque-forming microorganisms. | 1978 | 98105 |
| thermophilic methanogenesis in a hot-spring algal-bacterial mat (71 to 30 degrees c). | algal-bacterial mats which grow in the effluent channels of alkaline hot springs provided an environment suitable for studying natural thermophilic methane producing bacteria. methane was rapidly produced in cores taken from the meat and appeared to be an end product of decomposition of the algal-bacterial organic matter. formaldehyde prevented production of methane. initial methanogenic rate was lower and methanogenesis became exponential when samples were permitted to cool before laboratory in ... | 1978 | 98110 |
| [alteration of the construction and cellular composition of ileo-colonic lymph nodes of rhesus macaques after administration of salmonella vaccine]. | in stained histological sections, percentage ratio of areas to different cellular elements in structural components of the ileocolonic lymph nodes was studied in mature macaca rhesus, normal and after injection of salmonella vaccine. a rather considerable reaction in all structural components and cell composition of the lymph nodes was demonstrated as a response to immunization of the animals. these changes were demonstrated in decreased area occupied by the cortical substance and in increased a ... | 1978 | 98134 |
| analgetic actions of intrathecal opiates in cat and primate. | | 1978 | 98219 |
| thyroid-stimulating hormone: neuroregulation and clinical applications. part 2. | | 1978 | 98254 |
| biochemical changes in guinea pig lungs due to amosite asbestos. | | 1978 | 98326 |
| some effects of progestogens, oestrogens and androgens on the ocular tension of rabbits and owl monkeys. | | 1978 | 98336 |
| [attempts at use of indirect hemagglutination in the diagnosis of gonorrhea]. | | 1978 | 98361 |
| an analysis of group d streptococci recovered from cancer patients. | | 1978 | 98452 |
| positive regulation of amidase synthesis in pseudomonas aeruginosa. | mutants of pseudomonas aeruginosa were isolated that were acetamide-negative in growth phenotype at 41 degrees c and constitutive for amidase synthesis at 28 degrees c. two mutants were derived from the magno-constitutive amidase mutant pac111 (c11), and a third from a mutant that had enhanced inducibility by formamide, pac153 (f6). the three temperature-sensitive mutants produced amidases with the same thermal stabilities as the wild-type enzyme. cultures growing exponentially at 28 degrees c, ... | 1978 | 98516 |
| formylation of initiator trna methionine in procaryotic protein synthesis: in vivo polarity in lactose operon expression. | eucaryotic and procaryotic organisms differ in two aspects of their translation machinery: polycistronic messengers are expressed as a sequence of individual proteins only in procaryotes, and the initiation of protein synthesis proceeds with an initiator trna which is found to be modified (formylated) in procaryotes and not in eucaryotes. in the present study, we show that formylation is required in vivo for the coordinate expression of the escherichia coli lactose operon. our experiments are co ... | 1978 | 98518 |
| bacteria induce lymphokine synthesis polyclonally in human b lymphocytes. | we have studied the ability of various bacteria to stimulate human lymphocytes to produce leukocyte migration inhibitory factor (lif). mononuclear cells from adult and cord blood as well as purified t and b lymphocytes were stimulated with killed bacteria. the culture supernatants were tested for the presence of lif by the agarose migration method. all nine bacterial strains tested activated unseparated mononuclear cells and b lymphocytes but not t cells to produce lif. lif was also present in c ... | 1978 | 98583 |
| alterations of body fluid compartments and distribution of tissue water and electrolytes in rhesus monkeys with rocky mountain spotted fever. | chair-restrained rhesus monkeys (macaca mulatta) were inoculated subcutaneously with 10(2)--10(3) plaque-forming units of virulent rickettsia rickettsii. the latent period for fever and rickettsemia was three to four days; death occurred six to eight days after infection. total circulatory electrolyte levels and fluid volumes, including plasma, red blood cell, true circulatory blood, and extracellular fluid, increased. the expansion of the extracellular and plasma volumes resembled findings repo ... | 1978 | 98595 |
| antibacterial functions of macrophages in experimental protein-calorie malnutrition. i. description of the model, morphologic observations, and macrophage surface igg receptors. | an experimental protein-calorie malnutrition was produced in weanling sprague-dawley rats. the model resembles human malnutrition with respect to weight loss, inanition, angular stomatitis, anemia, lymphopenia, hypoproteinemia with hypoalbuminemia, and marked thymic involution. in addition, systemic invasion by gram-negative rods was documented. however, no edema was produced, and animals did not survive for longer than six weeks on the protein-deficient diet. one percent glycogen was found to b ... | 1978 | 98598 |
| [value of the use of a cement containing a combination of triamcinolone and tetracycline in cavity preparations]. | odontomix (reg'd) cement was used at the bottom of cavities prepared in healthy dog canines in a attempt to prevent pulp and dentine alterations caused by the preparation and filling of cavities. 24 dogs were used along with 24 controls. i.v. tetracycline was afterwards given 10 times at weekly intervals. examination of tetracycline labelling under the cavities showed that the cement caused pulp and dentine changes in confined areas, though it has not yet been possible to determine whether these ... | 1978 | 98698 |
| [retrograde axonal transport of horseradish peroxidase along the striato-thalamic pathways of cats]. | | 1978 | 98719 |
| the effects of sodium nitroprusside and trimethaphan camsylate on cerebral blood flow in rhesus monkeys. | hemispheric cerebral blood flow was measured in the rhesus monkey before and after infusion of the hypotensive agents sodium nitroprusside and trimethaphan camsylate. the intracarotid injections of 133xe was utilized, and flow was calculated by the "flow initial" technique. cerebral blood flow did not change significantly with the administration of trimethaphan camsylate. however, with a small reduction in blood pressure (10.6%) during the administration of sodium nitroprusside, the cerebral blo ... | 1978 | 98729 |
| changes in composition of tears of malnourished children. | | 1978 | 98738 |
| reduced hepatic bilirubin uridine diphosphate glucuronyl transferase and uridine diphosphate glucose dehydrogenase activity in the human fetus. | hepatic bilirubin uridine diphosphate glucuronyl transferase (udpg-t) activity was 0.14 and 0.22 units in two fetuses aged 17 and 22 weeks, respectively, and less than 0.1 unit in 15 fetuses, aged 8--19 weeks compared to 0.68--1.99 units in 21 normal adults. hepatic uridine diphosphate glucose dehydrogenase (udpg-d) activity in 14 fetuses, aged 8--18 weeks, ranged from 6.2--15.0 units (mean = 11.3 +/- 0.7) compared to 28.8--49.2 units (mean = 39.6 +/- 2.5) in eight normal adults (p less than 0.0 ... | 1978 | 98749 |
| microbiology of the vagina in children: normal and potentially pathogenic organisms. | vaginal cultures from 100 healthy girls, 2 months to 15 years of age, were examined for the presence of normal and potentially pathogenic microorganisms. corynebacterium vaginale, yeast species, and genital mycoplasmas were isolated from vaginal cultures from 13.5 %, 28%, and 28% of the girls examined, respectively. colonization with these organisms was not associated with signs or symptoms of vaginitis. neisseria gonorrhoeae was isolated from a 4-year-old with purulent vaginitis. trichomonas va ... | 1978 | 98750 |
| studies on the occurrence of peptococcus indolicus and corynebacterium pyogenes in abscesses in swine, and on the occurrence of pc. indolicus in apparently normal skin and mucous membranes of piglets. | pc. indolicus was isolated from 42.7% and cb. pyogenes from 48.7% of 150 pus-samples from abscesses in pigs (slaughter-house material, table i). in 41 specimens the two organisms were found together. further, pc. indolicus was demonstrated in 22.4% of 290 swabs from apparently normal skin and mucous membranes of piglets (autopsy material, table ii). by gel diffusion analysis the strains of pc. indolicus were referred to the serotypes b, c, d, e, or f. the type distribution (table iii) possibly r ... | 1978 | 98755 |
| [decreased blast transformation reaction and the characteristics of a peripheral blood lymphocyte population in lower monkeys compared to man]. | | 1978 | 98762 |
| use of t4 rna ligase to construct model substrates for a ribosomal rna maturation endonuclease. | rnase m5 of bacillus subtilis specifically cleaves a 179-nucleotide precursor 5s rrna to yield mature 5s rrna (116 nucleotides) and two fragments derived from the termini. possible recognition elements for rnase m5 within the precursor structure include nucleotide sequences arranged with 2-fold rotational and translational symmetry about the substrate bonds. we have used bacteriophage t4 rna ligase to construct, from synthetic oligonucleotides and mature or precursor 5s rrna fragments, test subs ... | 1978 | 98766 |
| location of the genes for human heavy chain immunoglobulin to chromosome 6. | immunoglobulin synthesis was examined in 31 man-mouse hybrid clones produced by fusing rag mouse cells with human lymphoid cells. cells were grown in serum-free medium containing [(14)c]leucine and a (14)c-labeled amino acid mixture. spent medium was dialyzed, concentrated, and subjected to radioimmunoelectrophoresis. eighteen clones were found to produce material that gave a radiolabeled precipitin line with anti-human igg (gamma-chain specific). production of material which was indistinguishab ... | 1978 | 98768 |
| open-field and lashley iii maze behaviour of the offspring of amphetamine-treated rats. | albino rats of our colony were administered 0.5 mg/kg of d,l-amphetamine sulphate or saline once daily throughout gestation beginning on day 1 of pregnancy. after delivery no other treatment was received by offspring. when adults, the pups of amphetamine-treated mothers had a higher motor activity in the open-field test measured as locomotion and rearing. in the lashley iii maze the treated group made more errors than controls in the first 4 days. after day 4 there seems to be habituation becaus ... | 1978 | 98786 |
| effects of chronic lead exposure on levels of acetylcholine and choline and on acetylcholine turnover rate in rat brain areas in vivo. | rats were exposed to lead acetate from birth, and were killed at the age of 44--51 days for analysis of levels and turnover rates of acetylcholine (ach). steady-state levels of ach were not altered in midbrain, cortex, hippocampus, or striatum of lead-exposed rats. similarly, no changes in choline (ch) concentrations were found in cortex, hippocampus, or striatum. in the midbrain, however, a 30% reduction in ch levels was observed. changes in specific activity of ch and ach were measured as a fu ... | 1978 | 98796 |
| the effects of d-amphetamine and scopolamine on drinking induced by a multiple schedule. | three food-deprived rats obtained food pellets on a multiple fixed-interval fixed-time schedule. during fixed-interval components a 45 mg pellet was made available for a lever-press every minute (fi 1 min). when the fixed-time component was in operation the lever was retracted and a pellet was delivered every minute (ft 1 min) independent of behaviour. a water bottle was available to each subject and similar levels of schedule-induced drinking developed during the two schedule components. the ef ... | 1978 | 98803 |
| [the value of the immunodiffusion test in the diagnosis of animal histoplasmosis]. | a serological study which involved the agar gel immunodiffusion test of 11316 animal serum samples (porcine, bovine, equine and ovine cattles) was made in the havana province in an attempt to detect precipitation bands for histoplasma capsulatum. 135 porcine serum samples and 4 bovine serum samples were positive. | 1977 | 98818 |
| mycological and serological studies in the diagnosis of various forms of pulmonary aspergillosis. | | 1978 | 98837 |
| vascular dynamics of an experimental cerebral arteriovenous shunt in the primate. | an arteriovenous fistula which shunted arterial blood from the circle of willis to the internal jugular vein was created in ten monkeys. continued patency of the shunt was confirmed angiographically. cerebral blood flow measurements were then obtained with the shunt both open and occluded. flow was also determined in response to elevations of systemic arterial pressure and raised arterial carbon dioxide tensions (paco2), again with the shunt both patent and occluded. in addition, flow through th ... | 1978 | 98854 |
| experimental spinal cord trauma, ii: blood flow, tissue oxygen, evoked potentials in both paretic and plegic monkeys. | graded clinical motor deficits were produced in a series of rhesus monkeys subjected to experimental spinal cord trauma from a variety of impact loads. an argon washout technique was used to measure spinal cord blood flow; tissue oxygen carbon dioxide, and somatosensory evoked potentials (seps) were also monitored. each animal received a clinical grade and, after a week of study, the spinal cords were removed for histopathological grading. blood flow in paraplegic animals was significantly decre ... | 1978 | 98856 |
| rat liver microsomal uptake and irreversible protein binding of [1,2-14c]vinyl bromide. | | 1978 | 98862 |
| an ontogenic study of the acute inflammatory response in the fetal rhesus monkey. ii. the mediation of increased vascular permeability by histamine, compound 48/80 and bradykinin. | vascular permeability as a function of age was evaluated quantitatively and morphologically in skin of fetal rhesus monkeys given vasoactive mediators. the response was examined at 90, 120 or 150 days of gestation or at birth and compared to the response of yearling rhesus monkeys. skin sites were challenged with histamine, compound 48/80 or bradykinin. evans' blue and horseradish peroxidase were used as markers of vascular integrity. evans' blue was quantitated spectrophotometrically. vascular ... | 1978 | 98895 |
| [capsule formation in bac. anthracis on a carbon medium]. | | 1978 | 98898 |
| quantitation of particles in the freeze-fractured nuclear membrane after renal ischemia. | changes in the number and sizes of membrane-associated particles have been quantitated in the protoplasmic (p) and exoplasmic (e) fracture faces of the outer membrane of nuclei isolated from the inner cortex following renal ischemia and reflow in the rat. no changes were observed in the inner nuclear membrane. after 20-min ischemia, the number of particles in both fracture faces decreased. with reflow, the total number of particles decreased after both 20- and 60-min ischemia. the partition coef ... | 1978 | 98907 |
| abnormalities of the nuclear envelope in porcine muscle affected with congenital myofibrillar hypoplasia. | the nuclear ultrastructure of muscle fibres in congenital myofibrillar hypoplasia of piglets was studied in order to provide more information on the pathological changes present. in the initial stages of the disease, muscle fibres with a small reduction of myofibrils often had an increased number of nuclear pores. in the more advanced stages of the disease, the following nuclear abnormalities were observed in muscle fibres showing an extensive disintegration of myofibrils: 1) large dilations of ... | 1978 | 98911 |
| [immunological relations between mother and child during pregnancy (author's transl)]. | the relations between the maternal and foetal organisms during pregnancy are partly very complicated and remain inexplicable. blastocyst, trophoblast, embryo and foetus have membrane antigens at a very early stage, and the immunocompetence of the foetus develops already during the second third of the pregnancy period. many non-specific factors are involved in preventing the castingoff reaction of the foetal organism. the trophoblastic tissue is probably of central importance. the focal point of ... | 1978 | 98927 |
| [some aspects relating to the aflatoxin generation during the self-heating of cereals]. | in a stored batch of grain which was already affected by mould-formation tests were carried out with the known aflatoxin producer aspergillus flavus. a significantly lower aflatoxin production ensued if the mould growth was not connected with self-heating of the stored product. however, in conformity with increasing mould formation the germinating power was adversely affected and the significant signs (fatty acid number, reductive and none-reductive sugars) were influenced in the grain, irreleve ... | 1978 | 98933 |
| naturally occurring atherosclerotic lesions and ageing changes in the aorta of indian water buffaloes (bubalus-bubalis). | | 1978 | 98939 |
| [measurement of the variations of cytoplasmic and nuclear volumes of the absorbing cells of the digestive tube according to the nutritional conditions, in the larva of the common toad (bufo bufo l.)]. | | 1978 | 98945 |
| improved safety of splenoportography by plugging of the needle tract. | splenoportography, a useful preoperative diagnostic procedure in patients with portal hypertension, has been largely discontinued because of the risk of hemorrhage. we have used both ivalon and gelfoam in particle and plug form to plug the needle tract after splenoportography. initial studies were conducted on six dogs. plugging of the needle tract by injection of suspensions of small gelfoam or ivalon particles resulted in intravasation of these particles into the splenic vein. this was demonst ... | 1978 | 98987 |
| fibrinogen turnover in pregnant rabbits during the first and last thirds of gestation. | although thrombin-mediated fibrinogen derivatives have been observed in normal pregnancy, an increased turnover of fibrinogen has been suspected but has not yet been demonstrated. fibrinogen turnover was studied in 14 pregnant and 10 nonpregnant female rabbits by use of purified rabbit 125i-labeled fibrinogen. in the last third of gestation the half life of fibrinogen was shortened by 45% and the fractional catabolic rate increased by 44% in comparison to the values for the first third of gestat ... | 1978 | 99036 |
| interferon inducing activity of polyinosinic acid. | although poly(i) is generally considered to be inactive as an interferon inducer, we have found several authentic poly(i) preparations to be effective inducers. their interferon inducing ability varied considerably from one cell system to another. in human diploid fibroblasts, primed with interferon and superinduced by cycloheximide and actinomycin d, all active poly(i) samples proved nearly as effective in inducing interferon as poly(i).poly(c). in primary rabbit kidney cell cultures, the activ ... | 1978 | 99486 |
| catabolism and protein binding of tc-99m pyridoxylideneglutamate. | various tc-99m-labeled compounds have been suggested as replacements for [i-131] rose bengal for imaging of the hepatobiliary system. among such compounds are schiff's bases, which are tin-free tc-chelates easily prepared by 30-min autoclaving of an equimolar mixture of pyridoxal and an amino acid at ph 8.5. we have compared the properties of several schiff's bases, including tc-99m pyridoxylideneglutamate (tc pyg) with [i-131] rose bengal. under conditions described, tc-pyg can be prepared free ... | 1978 | 99499 |
| ultrastructural observations on the maturation and secretion of granules in atrial myocardium. | | 1978 | 99521 |
| sympathetic joint effusion in septic arthritis. | | 1978 | 99527 |
| [salmonella infections]. | | 1978 | 99539 |
| [transplantation of langerhans' islands]. | | 1978 | 99549 |
| the effect of polyunsaturated fats on bile acid metabolism and cholelithiasis in squirrel monkeys. | squirrel monkeys (saimiri sciureus) were fed diets containing safflower oil, butter, or coconut oil and 1 mg cholesterol/cal for 15--17 mo to examine the effect of type of fat on cholelithiasis and bile acid metabolism. controls were fed low cholesterol diets containing an isocaloric mixture of the three fats. cholic acid fractional catabolic rate, pool size, chenodeoxycholic acid pool size, and total bile acid pool size and excretion rate were estimated using a modification of lindstedt's isoto ... | 1978 | 99632 |
| evidence for a c-terminal tyrosine residue in human and mouse b-lymphocyte membrane mu chains. | | 1978 | 99661 |
| electrophysiological investigation of cortico-hypothalamic relations in cats. | projections of different parts of the orbito-frontal cortex, the basal temporal cortex, and the hippocampus on hypothalamic nuclei were studied by recording focal responses in acute experiments on cats anesthetized with pentobarbital and chloralose. the proreal gyrus was shown to have local projections in the latero-dorsal zones of the preoptic region, in the postral parts of the medial forebrain bundle, and also in the region of the lateral and posterior hypothalamus with the mammillary bodies. ... | 1977 | 99685 |
| electrophoretic strand separation of long dnas with poly (u,g) in agarose gels. | we have found that binding of poly(u,g) to single-stranded dna decreases its mobility in 0.3% agarose gels. differential binding to the complementary strands of denatured duplex dna provides a simple method for strand separation. the method is shown to work with bacteriophage lambda dna, adenovirus dna and mtdna for tetrahymena pyriformis. in all cases the strand that binds more poly(u,g) in cscl gradients also binds more in gels. the separated strands can be directly blotted from the gel onto n ... | 1978 | 99728 |
| behavioral measurement measurements of excitability changes in reward sites in the dog: a frequency dependent effect. | | 1978 | 99757 |
| [method of obtaining crystalline choleragen and choleragenoid preparations]. | a new method of concentration and purification developed allows to obtain choleragen and choleragenoid preparations, homogeneous in the immunochemical analysis with regard to the culturing of vibrios producing these substances on the available nonsynthetic nutrient medium. crystalline choleragen and choleragenoid preparations were obtained from highly purified samples. choleragen possessed enterotoxic and skin premeability factors; choleragenoid shows no biological activity. | 1978 | 99923 |
| lumbar spondylectomy in the subhuman primate. | removal of the 2nd or 3rd lumbar vertebrae (or both) has been accomplished in the subhuman primate (macaca mulatta). variations between this animal and the dog in posture, vertebral column anatomy, and spinal cord blood supply made no apparent difference in the results when compared with those in previous experiments. all macaques were able to clinb and to use their hind legs in a normal manner within 3 days after surgical operation. once hair had regrown over the surgical incision, persons not ... | 1978 | 100028 |
| effect of a staphylococcin on neisseria gonorrhoeae. | phage group 2 staphylococcal strain ut0002 contains a large 56s virulence plasmid with genes that code for both exfoliative toxin and a specific staphylococcin termed bac r(1). four penicillinase-producing strains and three penicillin-susceptible strains of neisseria gonorrhoeae were killed by bac r(1). after 30 min of growth of the penicillin-resistant tr1 strain in 62.5 arbitrary units of bac r(1) per ml, loss of viability was approximately 90%, and, after 5 h, an approximately 99.99% loss of ... | 1978 | 100049 |
| [effects of malnutrition on the maturity of the c.n.s. iii. evolution of the largest lipid fractions and gangliosides]. | | 1978 | 100075 |
| [delayed implantation and early developmental defects in the mouse caused by pcb: 2,2'-dichlorobiphenyl (author's transl)]. | pregnant mice administered per os during the days 1--3 (plug day = day 0) post conception (p.c.) with 375 mg 2,2'-dichlorobiphenyl/kilograms/day revealed on day 18 p.c. increased number of resorptions and doses up from 500 milligrams/kilograms/day led to a substantial retardation of the prenatal development. based on the investigations during the early development it is concluded, that retardation of the fetus is caused by a delayed implantation. it is assumed, that increased resorption is due t ... | 1978 | 100080 |
| the distribution of hydrolytic enzyme activities in human fibroblast cultures and their intercellular transfer. | | 1978 | 100108 |
| increased sensitivity for detection of carcinogen-induced dna repair with the chain terminator dideoxythymidine. | | 1978 | 100116 |
| preparation and properties of a phospholipid-free form of microsomal udp-glucuronyltransferase. | | 1978 | 100135 |
| [picosecond energy transfer between the spectral forms of pigments from the reaction center of rhodospirillum rubrum]. | absorption changes of reaction centers from rhodospirillum rubrum at 748, 796 and 870 nm induced by 532 and 870 nm picosecond light pulses were investigated with a picosecond spectrometer. kinetics of absorption changes at 748 and 796 had an additional bleaching when induced by the 532 nm pulse, in comparison with those at 870 nm. the additional bleaching was interpreted as a result of the excitation energy transfer via spectral forms of pigments of reaction centers. the experimental results fit ... | 1978 | 100143 |
| [origin of a mitogrenic factor for cultivated macrophages (imf: inflammatory mitogenic factor) found in exudates of non-specific acute inflammation]. | the mitogenic activity of inflammatory exudate obtained from irradiated rats is reduced. after transfer of bone marrow syngeneic cells into irradiated rats this mitogenic activity is further decreased, while after transfer of thymic cells it is increased. it is postulated that the mitogenic activity of inflammatory exudate could be related to thymic cells and that t lymphocytes may be involved in non specific-inflammatory reactions. | 1978 | 100246 |
| the diet and feeding behaviour of cercopithecus aethiops tantalus. | the feeding behaviour of representative groups of tantalus monkeys (cercopithecus aethiops tantalus) was observed during 1974-1975 in three habitats in cameroon. observations took place during the wet and dry seasons in sahelian savannah, guinea savannah and farmed forest. the tantalus monkeys were similar to other races of c.aethiops that have been studied in that they were omnivorous and lacked any narrow specialisations of either diet or feeding techniques. the dietary range was similar in al ... | 1978 | 101428 |
| purification and characterization of allergens from parietaria officinalis pollen. | | 1978 | 101439 |
| antigenicity of purified glutaraldehyde-treated cholera toxoid administered orally. | the antigenicity of orally administered glutaraldehyde-treated cholera toxoid was investigated in healthy volunteers. fourteen volunteers ingested two or three 2-mg doses of toxoid with saline, with the doses spaced at 28-day intervals. thirteen other volunteers received comparable toxoid doses with nahco3 and milk to neutralize gastric acid. increments in circulating antitoxin levels were used to assay the antigenicity of oral toxoid. antitoxin was measured by adrenal cell, rabbit skin permeabi ... | 1978 | 101456 |
| linkage map of pseudomonas aeruginosa pat. | the locations of new markers relative to markers previously mapped on the chromosome of pseudomonas aeruginosa strain pat were defined by generalized transduction with phage f116l and f1083. although the marker orders of the various marker groups were deduced mainly from the results of two-factor crosses, the locations of a number of markers were confirmed by three-factor crosses. a linkage map of the chromosome of p. aeruginosa pat was constructed which shows the relative locations of 50 genes. ... | 1978 | 101525 |
| chromosome-membrane association in bacillus subtilis. iv. further purification of dna-membrane complex by using a combination of centrifugation and electrophoresis. | we have developed a simple procedure to purify a dna-membrane complex from bacillus subtilis by using a combination of centrifugation and electrophoresis. several unique proteins were detected in the purified complex. | 1978 | 101532 |
| tunicamycin-resistant mutants and chromosomal locations of mutational sites in bacillus subtilis. | the types of tunicamycin-resistant mutants of bacillus subtilis were analyzed, and their mutational sites on the chromosome were mapped. a type 1 mutation that simultaneously expressed hyperproductivity of extracellular alpha-amylase was located close to amy e. type 2 mutations were near aroi. | 1978 | 101533 |
| [studies on moraxella. ii. studies on the identification of moraxella by biochemical character (author's transl)]. | | 1977 | 101604 |
| effect of nitroglycerin on peripheral blood flow distribution and venous return. | | 1978 | 101653 |
| unilateral forelimb deafferentation in the monkey: purposive movement. | monkeys with unilateral dorsal rhizotomy c2-t3 used their denervated limbs to retrieve unseen food pellets when movements of the intact contralateral limb were rendered ineffective by enclosure of the hand within a container. even after protracted use in this condition, however, the deafferented limb ceased to be used in the test situation when the intact arm was released. these findings cast doubt on interpretations of lack of use of a unilaterally dorsal rhizotomized limb as being due to cross ... | 1978 | 101662 |
| clinical studies on pipemidic acid. | | 1978 | 101691 |
| [urobilinogen excretion in the urine and bacterial overgrowth in the jejunum of patients with jejuno-or ileo-transversostomy in man (author's transl)]. | | 1978 | 101703 |
| preparation of nitrogenase. | | 1978 | 101737 |
| [carbon metabolism in methylotrophic bacteria isolated from activated sludge]. | | 1978 | 101747 |
| functional rehabilitation of ankylosed temporomandibular joints. | successful chrome-cobalt prostheses have been used to replace the condyle and glenoid fossa in six young macaca irus monkeys. in one group of two animals the left temporomandibular joint was replaced; in the second group the right joint and in the third group both temporomandibular joints were replaced. neither masticatory function nor ability to open or close the mouth was affected, and all the animals remained in excellent health, living in the colony for 9 to 10 months. a similar surgical pro ... | 1978 | 101929 |
| [volatile fatty acids in gastrointestinal diseases in young infants]. | | 1978 | 101958 |
| [importance of bacteriological examinations for mycobacterium tuberculosis of certain groups of population with increased risk of contracting tuberculosis]. | | 1978 | 101984 |
| short-term memory in the rhesus monkey: effects of dopamine blockade via acute haloperidol administration. | the effects of dopaminergic blockade on recent or short-term memory (stm) were evaluated in test-sophisticated rhesus monkeys. each monkey was tested under several doses of the antidopaminergic haloperidol (0.006 to 0.05 mg/kg), in an automated, delayed-response procedure. the same procedure and test apparatus had previously been used to demonstrate profound stm impairments in aged rhesus monkeys and strikingly similar deficits in young monkeys given the anticholinergic scopolamine. the results ... | 1978 | 101990 |
| oxygen requirement for prostaglandin biosynthesis. | the formation of prostaglandins by vesicular gland cyclooxygenase can be regulated by o2 concentrations below 30 micron (20 mm hg) with an apparent km value of about 5 micron. this result suggests that most mammalian tissues might be expected normally to have sufficient o2 for some synthesis, and that only occasionally, would the level of oxygen available within some tissues become marginally inadequate to sustain a high rate of prostaglandin biosynthesis. | 1978 | 102002 |
| [participation of bacterial neuraminidases in the development of disease]. | | 1978 | 103344 |
| 5-nitro-2'-deoxyuridine 5'-monophosphate is a potent irreversible inhibitor of lactobacillus caesi thymidylate synthetase. | | 1978 | 103545 |
| studies on the characterization of the rho(d) antigen. | the rho(d) antigen of red cell membranes was solubilized using ethylene-diamine tetraacetic acid (edta) and 2-mercaptoethanol. the solubilized antigen was partially separated from other solubilized membrane components using molecular filtration. the antigen was treated with various enzymes to learn some of the chemical characteristics. it was found that the activity of the antigen, as measured by hemagglutination inhibition, was not affected by bee venom phospholipase a, clostridium welchii phos ... | 1978 | 103579 |