Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| electronic spectral and magnetic susceptibility studies of nickel[ii] and cobalt [ii] carboxypeptidase a complexes. | 2003 | 166104 | |
| thymosin-induced differentiation of murine thymocytes in allogeneic mixed lymphocyte cultures. | calf thymosin is shown to enhance the one-way mlr of cba thymocytes cultured with allogeneic mitomycin-c- treated c57bl/j6 spleen cells. thymosin does not enhance the one-way mlr of cba thymocytes cultured with syngeneic mitomucin-c-treated spleen cells. based on this finding we present a relatively simple, rapid and quantitative in vitro microculture hioassay for inducers of t-cell differentiation and propose that thymosin treatment, when accompanied by antigen presentation, induces the two-ste ... | 1975 | 165764 |
| immunopathology of mouse hepatitis virus type 3 infection. role of humoral and cell-mediated immunity in resistance mechanisms. | humoral and cell-mediated immune responses were studied in resistant and susceptible strains of mice infected with mouse hepatitis virus type iii (mhv 3). virus was maintained by regular passages in susceptible dba/2 mice and assayed in dba/2 mice by ld-50 determination. normal resistant a strain mice were able to clear the virus from liver, brain, and serum within 7 days after infection. no neutralizing antibody was found. transfer of serum from immunized a strain mice was not effective in prot ... | 1975 | 163277 |
| the independent living centre. | 2003 | 161503 | |
| subcellular effects of some anesthetic agents on rat myocardium. | the effects of ether, chloroform, and halothane on calcium accumulation and atpase activity of rat heart microsomes and mitochondria as well as on myofibrillar atpase activity were investigated. chloroform and halothane depressed microsomal and mitochondrial calcium uptake and binding in a parallel fashion. ether decreased microsomal calcium binding and mitochondrial calcium uptake to varying degrees, while mitochondrial calcium binding was slightly enhanced. whereas ether had no effect, chlorof ... | 1979 | 154965 |
| [effectiveness of the comprehensive treatment by rhonidase electrophoresis and tbilisi sulfide baths of elderly patients suffering from osteoarthrosis deformans]. | 2003 | 154769 | |
| satellite association in human metaphases. a comparative study of normal individuals, patients with down syndrome and their parents. | 1979 | 154489 | |
| [role of radiology in work-related lung diseases. i. diagnosis, prevention and compensation]. | 2003 | 152494 | |
| the effect of hypervitaminosis a on rat palatal development. | retinoic acid or retinyl acetate was administered to pregnant rats in doses sufficient to induce a 90% incidence of cleft palate. in another study, a delay in the reorientation of the palatal shelves was observed to be longer with the more potent teratogen, retinoic acid. on day 16 of gestation, 24 hours after final dosage with vitamin a, the synthesis of dna and protein was studied in fetal carcass, mandible, and palate, and that of sulfated mucopolysaccharides (s-mps) and glycoproteins (gp) in ... | 1978 | 152485 |
| pelvic displacement of a cardiac pacemaker following trauma. a case report. | the rate migration of an implanted cardiac pacemaker from the subrectus area anterior to the peritoneum to the pelvis following a motor vehicle accident is reported. discovery of dislodgement was made by observing a marked increase of pacemaker impulse amplitude in the three standard limb leads as measured on an oscilloscope. | 2003 | 152472 |
| [dynamic characteristics of the physical development of preschool children]. | 2003 | 152462 | |
| advertising should inform but not sell. | 2002 | 139562 | |
| chemotherapy of african trypanosomiasis. | 1976 | 135387 | |
| coronary artery fistula draining into left ventricle: case report and review. | a 6-year-old boy with coronary artery fistula emptying into the left ventricle was reported. an attempt was made to outline clinical manifestations of this disease which have not yet been fully described, based on the experience of the present case and a review of 14 previously reported cases. it is concluded that clinical signs and symptoms are not specific for this anomaly and retrograde aortography is required to establish the definite diagnosis of the lesion. authors' views are expounded as ... | 2002 | 135103 |
| [radiological aspects of cervical chordomas (author's transl)]. | the radiological findings in two patients with histologically verified cervical chordomas are described and compared with 40 others described in the literature. there is no typical radiographic picture. our cases showed benign-looking, extensive bone erosions of vertebral bodies and neural arches. in addition, there was destruction of the related discs and a soft tissue mass at the level of the bony lesions. | 2002 | 134948 |
| [bdellovibrio bacteriovorus as a factor in the self-purification of river water]. | 1976 | 134929 | |
| [cervical cystic lymphangioma]. | 2002 | 134427 | |
| [arguments for septoplasty in workers in non-ferrous metal mines]. | 2002 | 134422 | |
| [critical studies on the evaluation of need for special schooling in the halle school for handicapped]. | 2002 | 130128 | |
| [histological, histoenzymatic and biochemical study of the liver and small intestine of rats during short periods of starvation]. | the structure and the activity of acid phosphatase, beta-glucuronidase, alkaline phosphatase and atp-ase in the liver and small intestine of rats receiving for 20 days a one-time, fixed at a certain time (2 o'clock) feeding was studied morphologically in dynamics in 2, 6, 24 and 48 hours after the last feeding. furthermore, parallel with this the activity of acid phosphatase, beta-glucuronidase, alpha-glucosidase and beta-acetylglucosaminidase was determined in homogenates by biochemical methods ... | 1975 | 128202 |
| don't practice on me. | 2002 | 128117 | |
| effect of essential phospholipids on the properties of atpases of isolated rat liver plasma membranes of young and old animals. | "essential" phospholipids (epl), rich in dilinoleyl-phosphatidylcholine were given orally to young and 780-800 day-old rats. the double-labelled (14c/32p) dilinoleyl-phosphatidylcholine was incorporated in plasma membranes and the amounts incorporated into different organs investigated. old animals incorporated higher radioactivity than young. the 14c/32p ratio however decreased in comparison with the substance administered. the amount of (na+-k+)-atpase in rat liver plasma membranes of old anim ... | 1975 | 127894 |
| capillary density in skeletal muscle of man. | 1975 | 127508 | |
| malpractice--the patient pays!! | 2002 | 127365 | |
| [changes in ventilatory patterns before and after vagotomy in rabbits]. | ventilatory pattern have been investigated during rebreathing experiments. before vagotomy, a linear relation has been found between increasing tidal volume and decreasing inspiratory and expiratory durations. after vagotomy, these relations existed but expiratory duration remained almost constant. | 1975 | 126729 |
| some implications of declining birth rates for pediatrics. | 2002 | 126410 | |
| [pancreatic carcinoma on endoscopic retrograde pancreatico-cholangiogram (author's transl)]. | the pancreaticographic appearances of carcinoma of the pancreas have been divided into two types: 1. canalicular carcinoma arising from the duct system. if arising from the main pancreatic duct, it occludes this, or causes displacement or deformity of its branches in the immediate neighbourhood. if arising from branches, it causes cystic ectasia of the minor ducts; these appear fragmented and deformed while there is stenosis and displacement of the main duct. simultaneous origin from the main an ... | 1998 | 124684 |
| the relationship of changes in serum estradiol and progesterone during the menstrual cycle to the thyrotropin and prolactin responses to thyrotropin-releasing hormone. | the responses of serum tsh and prl to trh (500 microgram) were studied in normal young women in the early follicular, periovulatory, and midluteal phases of the menstrual cycle in order to examine the relationship of these responses to the levels of estradiol relationship of these responses to the levels of estradiol (e2) and progesterone. each woman was studied twice in each phase in order to assess intraindividual variability. there was no significant difference in either the tsh or prl respon ... | 2002 | 122427 |
| mineralization of the enamel of ovine permanent central incisor teeth using microhardness and histological techniques. | 1979 | 116728 | |
| [stability and reliability of a brief-intelligence test (mwt-b) to long-stay psychiatric patients (author's transl)]. | 1998 | 108605 | |
| isolation of an influenza virus subtype hav4navl from a budgerigar. | 1979 | 108521 | |
| membrane protein organization in atp-depleted and irreversibly sickled red cells. | 1998 | 108478 | |
| microscopic changes in rat tongue following experimental cryosurgery. | histological changes were studied in the rat tongue for varying periods of time up to 14 days following the application of a cryoprobe to the dorsal surface of rat tongue. within minutes of the application, focal subepithelial vesiculation and hyperemia occurred. at 3 h there was evidence of damage to capillary walls, resulting in hemorrhage. arterioles and venules were thrombosed and there were degenerative changes in the muscle layer of their walls. at 6 h ventral epithelium showed evidence of ... | 1979 | 108379 |
| the development and function of the female germ line in drosophila melanogaster: a cell lineage study. | 1998 | 108155 | |
| fascioloides magna: development in selected nonruminant mammalian hosts. | 1979 | 108129 | |
| muscular dystrophy contrasted with denervation: different mechanisms underlying spontaneous fibrillations. | the data reviewed in this paper indicate that spontaneous fibrillations do not involve a cholinergic mechanism since non-depolarizing anticholinesterase drugs such as mestinon fail to increase spontaneous fibrillations in denervated muscle. fibrillation potentials are related to the changes in electrical properties of the membrane of denervated muscle fibres which lead to the appearance of spontaneous subthreshold depolarizations, sometimes triggering a propagated potential. fibrillations seem t ... | 1998 | 108083 |
| [localized xanthogranulomatous pyelonephritis]. | 1998 | 107906 | |
| transpyloric feeding in the very low birthweight (1500 g and below) infant. one year's experience in an intensive care neonatal unit. | the success of transpyloric feeding in a group of babies weighing 1500 g or less was evaluated. this method was successful for most well babies but for many of those who required respiratory assistance (usually by face mask) it was not. | 1998 | 107865 |
| extravasation of albumin in tissues of normal and septic baboons and sheep. | 1979 | 107367 | |
| partial purification of heat-labile hemolysin from pseudomonas aeruginosa. | 1978 | 107353 | |
| biological properties of antibodies against rat adipocyte intrinsic membrane proteins. dependence on multivalency for insulin-like activity. | antisera from rabbits injected with rat adipocyte plasma membranes or intrinsic proteins from such membranes, obtained by a dimethylmaleic anhydride extraction step, mimicked the action of insulin on both glucose transport and lipolysis in intact adipocytes. biological activity in both types of antisera was mediated by immunoglobulin binding to one or more intrinsic proteins of the adipocyte plasma membrane since fat cells were unresponsive to all antisera absorbed with dimethylmaleic anhydride- ... | 1979 | 107169 |
| carbonic anhydrase of human endometrium: biochemical & clinical aspects. | 1978 | 107115 | |
| contralateral projection of primary afferent fibers to mammalian spinal cord. | 1979 | 107041 | |
| epilepsy. | epilepsy is a common disorder affecting approximately one in every two hundred people, from all walks of life, and presenting in addition to the seizure disorder itself, varying social, psychological and economic problems. a simple classification of epilepsy is described, and the concept of 'seizure threshold' introduced. having diagnosed epilepsy, the need for investigation to separate the symptomatic epilepsies from idiopathic epilepsy is stressed. accurate diagnosis of seizure type ensures th ... | 1998 | 106817 |
| [detection of healthy carriers of neisseria meningitidis in a sample of the population of the city of messina]. | 1977 | 106778 | |
| ct metrizamide myelography for intraspinal and paraspinal neoplasms in infants and children. | computed tomography (ct) metrizamide myelography is an accurate and satisfactory method for examining the spinal cord in infants and children with suspected intraspinal neoplasms. it was performed in 13 infants and children and in one adult with intra- and paraspinal neoplasms. ct metrizamide myelography in paraspinal masses provides the total geography of the mass; that is, possible intraspinal extension, as well as the paraspinal portion itself. as such, it is superior to conventional myelogra ... | 1998 | 106638 |
| development of biclonal gammopathy in a patient with von recklinghausen's neurofibromatosis. | a well established case of von recklinghausen's neurofibromatosis, in which a biclonal gammopathy developed, has been studied. one of the paraproteins was characterized as igg kappa, the other as igg lambda. this combination of anomalies has not been described previously in the literature. | 1998 | 106627 |
| [role of heterogenized cellular antigens in cross immunity reactions in paramyxovirus infections]. | heterogenized antigens similar to the antigens of sheep and guinea pig red blood cells were revealed by indirect immunofluorescence in tissue cultures infected with parotitis virus. participation of these antigens in cross immunofluorescence reactions observed in tissue cultures infected with various paramyxoviruses and in a suspension of erythrocytes loaded with these viruses was established. it was shown that immunization of children with parotitis virus was accompanied by a specific anamnesti ... | 1978 | 106603 |
| [permanent epimyocardial cardiac stimulation by the subxiphoid technic]. | 1998 | 106442 | |
| cerebrospinal fluid-, blood-, and ascitis-catecholamines in hepatic cirrhosis. | the consideration of the extensive innervation of liver parenchyma, together with data relating to the degradation of catecholamines in the liver and the importance of hepatic vascular process in hepatic cirrhosis, prompted us to investigate the behaviour of catecholamines in this condition. the following parameters were measured in cerebrospinal fluid (csf), blood and ascitis fluid: total catecholamines, adrenaline and noradrenaline. during hepatic cirrhosis, total catecholamines level in blood ... | 1998 | 106413 |
| pyruvate dehydrogenase deficiency in spinocerebellar degenerations. | to study the incidence of abnormalities of the pyruvate (pdh) or ketoglutarate (kgdh) dehydrogenase complexes in patients with spinocerebellar degenerations, we measured the activities of pdh and kgdh in platelet-enriched preparations from the blood of 14 patients. low pdh was found in 6 of the 14 patients; low kgdh was found in 2 of the 6. pdh-normal and pdh-abnormal patients could not be distinguished by clinical criteria. these results extend previous studies, which suggested abnormalities of ... | 1998 | 106330 |
| the oral hypoglycemic controversy. stay as sweet as you are. | 1998 | 106193 | |
| [blood transfusion - practice at komagome municipal hospital. 3. specificity and complications of blood transfusion (3)]. | 1998 | 106158 | |
| acromegaly with normal growth-hormone levels and pituitary histology. case report. | in rare cases, acromegalic patients have normal basal concentrations of growth hormone, and their acromegaly results from abnormal growth-hormone secretory patterns. a patient is reported with the clinical features of acromegaly, who had elevated somatomedin levels and an enlarged sella turcica, but whose serum growth-hormone levels on continuous monitoring were in the normal range, with levels of 2.8 to 8.9 ng/ml. dynamic studies of growth hormone revealed normal responses to hypo- and hypergly ... | 1998 | 106097 |
| disorders in somesthesis following lesions of parietal lobe. | 1. we determined the effects of lesions of the parietal lobe on the capacities of monkeys to detect and discriminate between mechanical sinusoids delivered to the hand. tests of discrimination measured the capacity to discriminate between frequencies of flutter (24--36 hz) and the capacity to make gross discriminations of frequency of flutter-vibration over the range of 10--50 hz. 2. a unilateral removal of the parietal lobe impaired sensory capacities only on the contralateral hand; detection t ... | 1979 | 106093 |
| specific requirement of nadph-cytochrome c reductase for the microsomal heme oxygenase reaction yielding biliverdin ix alpha. | 1979 | 105935 | |
| effect of continuously increasing concentrations of plasma ketone bodies on the uptake and oxidation of glucose by muscle in man. | muscle metabolism in man was studied by measuring the arterial and deepvenous concentrations of glucose, lactate, pyruvate, free fatty acids, beta-hydroxybutyrate and aceacetoacetate, and forearm blood flow. after the subjects had fasted overnight, their arterial free fatty acid and ketone levels rose continuously during a period of 90 min, leading to increased ketone body uptake by muscle. hence, for each subject, a relation was obtained between arterial concentrations and arterial-deepvenous d ... | 1978 | 105915 |
| genome structure of tetrahymena pyriformis. | reassociation kinetics of dna from the macronucleus of the ciliate, tetrahymena pyriformis gl, has been studied. the genome size determined by the kinetic complexity of dna was found to be 2.0 x 10(8) base pairs (or 1.2 x 10(11) daltons). about 90% of the macronuclear dna fragments 200-300 nucleotides in length reassociate at a rate corresponding to single-copy nucleotide sequences, and 7-9% at a rate corresponding to moderate repetitive sequences; 3-4% of such dna fragments reassociate at c0t p ... | 1998 | 105861 |
| [effectiveness of prolonged uterine relaxation by betamimetic drugs for threatened premature labour (author's transl)]. | it is statistically proven that long-term administered betamimetic drugs inhibit excessive uterine activity, but for the individual subject the extent of this effect can hardly be predicted. by studying 167 pregnancies treated for threatened premature labour it is confirmed that the success rate of the tocolytic treatment depends strictly on the clinical feature of the condition as observed on admission. by use of a simple scheme for classification of success, correlations with the importance of ... | 1998 | 105481 |
| [unusual fetomaternal blood group antagonism]. | 1998 | 105299 | |
| immunocytochemical characterization of the lymphocytes in nodular lymphoid hyperplasia of the bowel. | the immunoglobulin constituents of hypertrophied lymphoid nodules in the intestinal tracts of six patients with the variable immunodeficiency syndrome and one patient with selective iga deficiency were evaluated by the peroxidase-labeled antibody technique. the nodules were found to contain a dense population of igm-bearing lymphocytes and much intercellular igm. evidence that the cells were engaged in igm synthesis was the presence of the immunoglobulin in the perinuclear spaces and endoplasmic ... | 1998 | 105208 |
| health expenditure 1978/79. | 1998 | 104698 | |
| effect of ionophores and inhibitors and uncouplers of oxidative phosphorylation on sperm respiration. | 1978 | 104673 | |
| involvement of the mature domain in the in vitro maturation of bacillus subtilis precursor 5s ribosomal rna. | a precursor of 5s ribosomal rna from bacillus subtilis (p5a rrna, 179 nucleotides in length) is cleaved by rnase m5, a specific maturation endonuclease which releases the mature 5s rrna (m5, 116 nucleotides) and precursor fragments derived from the 5' (21 nucleotides) and 3' (42 nucleotides) termini of p5a rrna. previous results (meyhack, b., et al. (1978) proc. natl. acad. sci. u.s.a. 75, 3045) led to the conclusion that recognition elements in potential rnase m5 substrates mainly reside in the ... | 1978 | 103577 |
| [practice in cooperation: german tumor centers]. | 2000 | 101785 | |
| demonstration of adrenergic catecholamine receptors in rat myometrium and their regulation by sex steroid hormones. | 1978 | 101725 | |
| [muscle blood flow and capillary diffusion capacity in patients with rheumatoid arthritis (author's transl)]. | capillary blood flow (xenon-133) and diffusion capacity for chrom-51-edta (ps-product of renkin) of striated muscle tissue were examined by double isotope method in patients with rheumatoid arthritis. xenon-clearance and ps-product were studied under normal conditions and following hyperemisation. there existed no significant difference between rheumatoid patients and normal subjects and there was no evidence of increased capillary permeability. apparently, derangement of muscle capillaries is r ... | 2000 | 101713 |
| dominant constitutive mutations in malt, the positive regulator gene of the maltose regulon in escherichia coli. | 1978 | 101676 | |
| prenatal development of acid beta-glycosidases in the rat liver, effect of triiodothyronine or cortisone administered to pregnant rats. | we have found that acid beta-galactosidase, beta-glucuronidase and n-acetyl-beta-glucosaminidase in the rat fetal liver increase during the last week of pregnancy. these enzyme activities were influenced by treatment of pregnant rats (daily from day 16) with l-tri-iodothyronine (20 or 50 microgram/100 gm b.w.) or cortisone acetate (10 or 50 mg/100 gm b.w.) as studied in their fetuses obtained on day 22 by caesarian section. | 1978 | 101435 |
| 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 |
| [skin lesions responding to zinc oil during total parenteral feeding]. | 2001 | 99674 | |
| procarbazine lung. | 2000 | 99008 | |
| [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 |
| [long-term treatment of glomerulonephritis with indomethacin with special regard to quantity and selectivity of proteinuria]. | in 53 patients (19 women, 34 men), of them 41 patients with an intracapillary proliferative glomerulonephritis, 9 with membranous proliferative and 3 with a membranous glomerulonephritis under an indometacin therapy examinations concerning proteinuria were carried out, partly with determination of the index of selectivity and representation of the protein clearance. in patients with a moderate proteinuria of less than 3 g a day this treatment achieved a smaller antiproteinurie effect than in pat ... | 1998 | 98929 |
| changes in composition of tears of malnourished children. | 1978 | 98738 | |
| catecholamine-induced alterations in glucose homeostasis in baboons, dogs, rabbits, and rats: comparative effects of somatostatin. | 1978 | 98685 | |
| family life cycle resource center in the elementary school. | 2001 | 98495 | |
| biochemical changes in guinea pig lungs due to amosite asbestos. | 1978 | 98326 | |
| [biliary tract atresia]. | 2000 | 97569 | |
| effect of dietary composition on fasting-induced changes in serum thyroid hormones and thyrotropin. | 2000 | 97492 | |
| [transplantation of the big toe from the foot to the hand in monkeys using a microsurgical technic]. | 1978 | 97465 | |
| [gaining nursing experience through trial and error]. | 2000 | 97443 | |
| studies on the low-molecular weight glycoprotein gp-350: molecular and immunological heterogeneity. | 1978 | 97368 | |
| determination of fetal sex by ultrasound. | 2000 | 97313 | |
| regulation of ribosomal rna synthesis in tetrahymena pyriformis. | ribosomal rna is synthesized at constant rate during most of the cell cycle in heat-shock synchronized populations of tetrahymena pyriformis. early in each macronuclear s-period the rate of synthesis increases abruptly, concomitant with replication of the genes coding for ribosomal rna. the increase is prevented by inhibitors of dna replication, added prior to the s-period. similarly, in cultures synchronized by starvation/refeeding, inhibition of dna replication, at the time when the rdna is re ... | 2000 | 97302 |
| [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. | 1999 | 97001 |
| association of diamine oxidase and ornithine decarboxylase with maturing cells in rapidly proliferating epithelium. | diamine oxidase and ornithine decarboxylase activities are shown to have a parallel distribution across rat small intestine mucosa; levels of both enzyme activities are sharply higher in mature cells in the villus tip region than in proliferating cells in the crypt areas. histidine decarboxylase levels were not measurable in the same cell preparations and aromatic-l-amino-acid decarboxylase activity was distributed in an opposite pattern to diamine oxidase and ornithine decarboxylase. the result ... | 1978 | 96870 |
| sodium iron nafeedta as an iron fortification compound in central america. absorption studies. | studies were performed in seven children and 98 adults to compare the proportion of iron absorbed when administered as ferric sulfate (fe2(so4)3), nafeedta, hemoglobin (hb), and ferrous ascorbate. studies in children (mostly iron deficient) showed that when the compounds were given with a milk-rice-sugar formula totalling 5 mg fe, iron from hemoglobin was absorbed best, followed by nafeedta and by fe2(so4)3 (mean percent absorption +/-sd = 34.5 +/- 1.5, 8.6 +/- 1.9 and 3.3 +/- 1.5, respectively) ... | 1999 | 96688 |
| the significance of antidromic potentiation and induced activity in the retina. | it is argued that "the significance of antidromic potentiation and induced activity in the retina" (the title of this article) concerns two identical effects and that both are the outward sign of the existence of a specific organization in the retina. for this reason they can serve as a valuable criterion for identifying activity in this organization. this activity is assumed to be in the nature of a self-excitation by positive feedback in the amacrine circuits of certain y-cells. relevant liter ... | 1978 | 96310 |
| 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 |
| biochemical and energetic gradients in the mucosa of stomach and duodenum of patients with antral ulcer. | separation and measurement of adenine-adenosine, adenosine monophosphate (amp), adenosine diphosphate (adp), adenosine triphosphate (atp), lipid phosphates, rna and dna, further, separation and measurement of mg2+-dependent, total (mg2+-dependent plus na+--k+-dependent, mg2+-na+-k-dependent) and na+-k+-dependent atpases were carried out in the mucosa and muscles of the corpus, antrum and duodenum of 68 patients with antral ulcer. it was found that (1) the substrate levels of adenosine nucleotide ... | 2001 | 95466 |
| flashbacks: ventricular fibrillation. part ii. | 2001 | 95229 | |
| a theoretical model for adhesion between cells mediated by multivalent ligands. | a theoretical model is developed for cell-to-cell binding by bivalent ligands that can bind to mobile receptors on the cell surfaces. monovalent inhibitors that can bind either to receptors or ligands are also included. for symmetrical ligands, that is, ligands in which both binding sites are the same, it is shown that crosslinking of receptors on each cell will interfere with intercellular bridge formation. at equilibrium, such interference is not drastic, but if the crosslinks can form before ... | 2001 | 95173 |
| biochemical effects of the modification of nucleic acids by certain polycyclic aromatic carcinogens. | 1979 | 95052 | |
| role of interferon in mice in protection against influenza a virus by bacterial ribosomes together with membranal glycoproteins of klebsiella pneumoniae as adjuvant. | nonspecific protection against infectious aerosols of influenza a virus was obtained in swiss mice after vaccination by aerosols of bacterial ribosomes together with membranal glycoproteins extracted from klebsiella pneumoniae as the adjuvant. it was shown that repeated stimulant aerosols were necessary to obtain this protection. routine estimation of serum interferon levels after administration of the association of ribosomes plus membranal glycoproteins to the animals by aerosol or intravenous ... | 1979 | 94908 |
| [the heterogeneity of streptokinases]. | purified streptokinases of some strains of different types of strep. pyrogenes (group a) as well as streptokinases of a strain of group c or group g streptococci, resp., were studied in regard of their heterogeneity. differences of the streptokinases were found in their amino acid compositions and in isoelectric points. serological differences were detected by a quantitative precipitation reaction with fluorescein-coupled antistreptokinase antisera from the goat as well as by neutralization reac ... | 1979 | 94885 |
| quantitative study of the energy conversion in halobacterium halobium [proceedings]. | 1979 | 94791 | |
| a novel biological function of macrophages associated with antigen discrimination properties. | the ability of fresh or cultured subpopulation of adherent peritoneal exudate cells to perform discrete biological functions commonly associated with macrophages, namely antibody dependent cytotoxicity (adcc) and phagocytosis, has been compared with the ability of the same cells to present tnp coupled to carbohydrate or protein carriers for a subsequent antibody response, or semi-allogeneic cells for t cell cytotoxic responses, in tissue culture. data are presented to show that adcc reactivity r ... | 2000 | 94755 |
| placental alkaline phosphatase, alphafetoprotein and carcinoembryonic antigen in testicular tumors. tissue typing by means of cytologic smears. | indirect immunofluorescence and radioimmunoassay with specific rabbit antisera demonstrated the occurrence of alphafetoprotein (afp), carcinoembryonic antigen (cea) and placental alkaline phosphatase (plap) in primary testicular tumor cells. embryonal carcinomas had afp- and cea-containing cells, sometimes plap. plap and sometimes cea were found in seminoma cells. sera from patients with advanced non-seminomatous tumors could contain any of these antigens or any combination of them. sera from pa ... | 1979 | 94592 |
| characterization of 40,000- and 25,000-dalton intermediate precursors to rauscher murine leukemia virus gag gene products. | under steady-state labeling conditions, rauscher murine leukemia virus-infected nih swiss mouse cells contain at least three major polyproteins derived from the viral gag gene. they have molecular weights of 65,000, 40,000, and 25,000. they have been termed ppr65gag, pr40gag, and ppr25gag. ppr65gag has been shown by a number of laboratories to be composed of all four core proteins (p15, pp12, p30, and p10). in this paper, pr40gag was found to contain p30 and p10 antigenic determinants and peptid ... | 1979 | 94357 |