| lysosomal membrane stabilization by enfenamic acid. | | 1986 | 3583334 |
| prevalence and distribution of spotted fever and typhus infections in sierra leone and ivory coast. | a serosurvey for evidence of rickettsial infections was conducted in the rural populations of several tropical rain forest areas in sierra leone and ivory coast. seropositivity rates were surprisingly high in both countries, with more than 7% of the individuals in some districts having antibodies to spotted fever-group rickettsiae. no significant difference was found in the overall prevalence of diagnostic antibody titers to spotted fever-group rickettsiae in sierra leone (5.3%) and ivory coast ... | 1986 | 3025125 |
| animal model: dysmorphogenesis and death in a chicken embryo model. | the chicken embryo is a useful animal model for investigating problems in developmental biology and teratology. here we report data that further define the causes of 2 different patterns of malformation (one associated with amnion abnormalities, the other with isolated neural tube defects) and death induced by making a window in the shell and subshell membranes during the first day of incubation. the interpretation of these data suggests to us the following hypotheses. an early amnion deficit sp ... | 1987 | 3631128 |
| effects of "partial axotomy" upon synaptic function. | a lesion limited to the dorsal columns, at the level of l3-l4, was carried out in chronic cats. this operation produced a "partial axotomy" type of lesion on the ascending branches of ia hind limb afferents. two to six months after this operation, intracellular studies on l7-s1 motoneurons were carried out. similar studies were done in normal animals. the peak amplitude and the rate of rise (dv/dt) of heteronymous epsp's were studied during control conditions (sampling at 1 hz) and during the po ... | 1986 | 3026830 |
| morphological effects of gas compression on the cortical vitreous. | we used scanning electron microscopy to study vitreous in normal and perfluorocarbon gas-treated eyes of cynomolgus monkeys. the cortical vitreous of the normal (control) eye appeared to be a lamellar structure composed of sheets of collagen mesh. in the gas-treated eye there was shrinking and tearing of the lamellae. at six and 12 weeks after gas injection there was membrane formation at the edges of the torn lamellae. | 1986 | 3741253 |
| [herpes genitalis, in prostitutes. detection of asymptomatic viral excretors and their epidemiological role]. | | 1986 | 3027823 |
| multiple subdural abscesses following colonic perforation--a rare complication of a ventriculoperitoneal shunt. | a case of colonic perforation by a ventriculoperitoneal shunt, its subsequent migration and protrusion from the anal orifice is reported. the shunt reservoir and ventricular catheter were removed percutaneously, and the disconnected peritoneal catheter was pulled out through the anus. blood culture grew klebsiella pneumoniae and streptococcus fecalis. ct scan showed multiple subdural abscesses with evidence of ventriculitis. removal of the shunt (as described), evacuation of subdural pus and sys ... | 1988 | 3050846 |
| role of natural killer cells in the early clearance of rickettsia typhi in mice. | | 1988 | 3144156 |
| creatinine excretion rates for evaluation of kidney function in children. | a protein load protocol for evaluation of kidney function was tested in normal children and pediatric renal patients. an overnight, timed urine collection was used for calculation of the baseline creatinine clearance and creatinine excretion rate. one hour following ingestion of a standardized protein meal (baked chicken), a 2-3 h urine collection was begun. the post-protein meal changes in creatinine clearance showed considerable variation in both the normal children and those with renal disord ... | 1988 | 3153054 |
| a possible role for natural killer cells in providing protection against plasmodium berghei in early stages of infection. | beige mutant mice, which are deficient in natural killer (nk) cells, exhibited a significantly higher parasitaemia than the parental c57bl/6 strain between days 4 and 10 after infection with plasmodium berghei. within 8-12 days after infection 70% of beige mice were dead but no deaths occurred in the parental strain until day 16. the median survival time of the beige mice (10 days) was significantly lower than that of the parental strain (22 days). it appears that nk cells may be protective in t ... | 1985 | 3891603 |
| antibacterial action of powdered semiconductor on a serotype g streptococcus mutans (short communication). | | 1988 | 3165714 |
| hypocholesterolaemic effects of dietary propionate: studies in whole animals and perfused rat liver. | in adult male rats fed a non-purified diet supplemented with 5% sodium propionate, plasma cholesterol concentrations were significantly depressed. although liver cholesterol was increased by feeding propionate, rates of hepatic cholesterol and fatty acid synthesis were unchanged. tissue concentrations and rates of synthesis of cholesterol were also unaffected by dietary propionate in stomach, small intestine and caecum. concentrations of propionate in hepatic portal venous plasma were raised by ... | 1988 | 3214141 |
| testosterone-sensitive vasotocin-immunoreactive cells and fibers in the canary brain. | a sexual difference in vasotocin (vt) immunoreactivity was observed in the canary brain. the male canary displays denser vt innervation of the lateral septum and more vt-immunoreactive cells are visible in the dorsal diencephalon than in the female canary. this sex difference is the consequence of gonadal influences. castration of male canaries resulted in a substantial decrease of vt immunoreactivity in these septal and diencephalic cells and fibers. testosterone administration to castrated mal ... | 1988 | 3359249 |
| convulsive syndrome induced by the intracerebroventricular injection of alpha-difluoromethylornithine in rats. | in adult rats, the intracerebroventricular injection of alpha-difluoromethylornithine (dfmo), a polyamine antimetabolite which specifically inhibits ornithine-decarboxylase, induces a typical convulsive syndrome (ed50 = 100 micrograms/rat) and death (ld50 = 300 micrograms/rat). histological lesions are seen only with the highest doses and are essentially restricted to the ammon's horn neurones. since dfmo is currently undergoing clinical trials for use in cancer chemotherapy, including brain tum ... | 1985 | 3925717 |
| effect of chronic naltrexone administration and its withdrawal on the regional activity of neurons that contain norepinephrine, dopamine and serotonin. | a method is described that permits the simultaneous quantitation of norepinephrine (ne), dopamine (da) serotonin (5-ht) and their respective major metabolites, 3-methoxy-4-hydroxy phenylglycol (mhpg), 3-methoxytyramine (3-mt), dihydroxyphenyl acetic acid (dopac) and 5-hydroxyindole acetic acid (5-hiaa) in discrete brain regions. the ratio of mhpg/ne, dopac/da and 5-hiaa/5-ht was used to assess the effects of the chronic administration of the narcotic antagonist, naltrexone, and its withdrawal on ... | 1988 | 3370455 |
| ischaemia-induced changes in the phosphorylase activity in different parts of the cardiac conduction system. | the phosphorylase specific activity was lowered in total ischaemia in all examined parts of the myocardium and the conduction system of the heart. sixty-minute ischaemia had a considerable effect on glycogen degradation in right bundle branch and in the working myocardium, however, its glycogenolytic effect on the av-node and penetrating bundle of his was insignificant. phosphorylase "a" evaluated as a percentage of the total phosphorylase activity decreased in the working myocardium and increas ... | 1988 | 3391039 |
| transovarial transmission of murine typhus rickettsiae in xenopsylla cheopis fleas. | it has been generally accepted that infected fleas do not pass on rickettsia mooseri, or indeed any other known pathogen, to their progeny. it is reported here that such transovarial transmission does occur in laboratory-infected xenopsylla cheopis fleas. by means of the direct fluorescent antibody test, rickettsia mooseri was observed in cells of the hemolymph of infected fleas. as many as 11 percent of the adults and 2.9 percent of the larvae of the generation reared therefrom, had demonstrabl ... | 1985 | 3966162 |
| c-myc expression and transformed phenotypes in hybrid clones between mouse plasmacytoma s194 cells and normal spleen cells or fibroblasts. | expression of the rearranged c-myc oncogene and transformed phenotypes was investigated in 2 different types of somatic cell hybrid clones between a balb/c mouse plasmacytoma line (s194) and normal allogeneic spleen cells or fibroblasts. in the parental s194 cells, one allele of the c-myc was rearranged and its 5'-flanking region was partially deleted by recombination with the immunoglobulin c alpha gene. due to this recombination, s194 cells expressed approximately 20-fold higher than normal sp ... | 1988 | 3417371 |
| endoscopic findings of bleeding esophageal varices and experimental study. | it has been considered that the rupture of esophageal varices occurs with high incidences, and once bleeding occurs it sometimes cause fetal massive bleeding. however, from our experiences with the active application of emergency endoscopy, the incidence of bleeding from varix was unexpectedly low. from these results, we studied the rupture signs of esophageal varices in experiments on dogs and clinical cases. the actual rupture signs of varices were summarized as active bleeding, adhesion of fr ... | 1987 | 3497471 |
| suppression of migration inhibition factor (mif) production by mitomycins in vitro. | the effects of a series of mitomycins in a modified version of the migration inhibition factor (mif) test were investigated. this modified assay, which uses monocytes of the mouse cell line wehi3 as target cells for mif, discriminates between effects on the migrating monocytes, the production of mif by lymphocytes and the activity of the produced mif. the 7-methoxy mitomycins were found to be more active than the 7-amino and 7-hydroxy derivatives in suppressing both the spontaneous migration of ... | 1986 | 3533763 |
| dna composition in rickettsia mooseri by base analysis. | | 1973 | 4148120 |
| suppression of migration inhibition factor (mif) production by mitomycins in vitro. | the effects of a series of mitomycins in a modified version of the migration inhibition factor (mif) test were investigated. this modified assay, which uses monocytes of the mouse cell line wehi3 as target cells for mif, discriminates between effects on the migrating monocytes, the production of mif by lymphocytes and the activity of the produced mif. the 7-methoxy mitomycins were found to be more active than the 7-amino and 7-hydroxy derivatives in suppressing both the spontaneous migration of ... | 1986 | 3533763 |
| [effect of polymyxin b on membranes and membrane components of salmonella typhimurium]. | | 1974 | 4154673 |
| [changes in the activities of nad- and nadp-specific isocitrate dehydrogenases in the brain and liver during the postembryonic development of animals]. | the activities of nad- and nadp-specific isocitrate dehydrogenases (icdh) were investigated in subcellular fractions of rat brain and liver. animals of different age groups were used: newborn, 10-, 20-, 30-, 40-days old and adult rats. it was shown that nad-icdh activity rose sharply in adult brain mitochondria as compared with that of developing animals. the nad-dependent pathway of isocitrate oxidation predominated in mitochondria of both developing and adult brain. the activity of nadp-icdh d ... | 1974 | 4157232 |
| suppression of rickettsia typhi transmission in fleas maintained on murine typhus-immune rats. | the presence of host antibodies against rickettsia typhi in the hemolymph of xenopsylla cheopis fed on immune rats was studied using an indirect immunofluorescent antibody (ifa) test and enzyme-linked immunosorbent assay (elisa). the time course experiment revealed that antibody to r. typhi appears in the flea hemolymph after 18 hr exposure to host and persists for 24 hr. ifa tests utilizing specific antisera to rat igg (fc) and rat igg (fab) fragments, indicate that some unaltered rat igg to r. ... | 1987 | 3120611 |
| lysis of cells infected with typhus group rickettsiae by a human cytotoxic t cell clone. | cytolytic human t cell clones generated in response to the intracellular bacterium rickettsia typhi were characterized. growing clones were tested for their ability to proliferate specifically in response to antigens derived from typhus group rickettsiae or to lyse targets infected with r. typhi or rickettsia prowazekii. two clones were able to lyse targets infected with typhus group rickettsiae. one of these clones was more fully characterized because of its rapid growth characteristics. this c ... | 1987 | 3121731 |
| warfarin-resistant rats. | | 1970 | 4191943 |
| transmission of murine typhus rickettsiae by leptopsylla segnis (siphonaptera: leptopsyllidae). | | 1987 | 3121858 |
| [occurrence in normal human serum of antibodies neutralizing toxic properties of rickettsia typhi]. | | 1973 | 4202476 |
| murine typhus among khmers living at an evacuation site on the thai-kampuchean border. | an outbreak of febrile disease involving 170 khmer adults at an evacuation site in thailand occurred during the dry season of 1986, only 8 months after the camp was constructed. the illnesses were characterized by persistent fever, retro-orbital headache, myalgias, and clinical response to tetracycline within 2-3 days. the symptoms, effectiveness of tetracycline, and presence of a large rat population raised the suspicion of murine typhus. fourteen (74%) of 19 patients had elevated or rising ant ... | 1988 | 3124646 |
| [experimental chemo- and chemoendocrine therapy of human breast carcinomas serially transplanted into nude mice]. | four human breast carcinoma strains serially transplanted into nude mice were used for the experimental chemotherapy and combination chemoendocrine therapy. whereas three of these strains (mcf-7, br-10, tm-61) possessed cytosol estrogen receptor (erc) and were dependent on estradiol for the tumor growth, the other strain (mx-1) without erc was hormone independent. for the chemotherapy, mitomycin c (mmc), adriamycin (adm), cyclophosphamide (cpm) and 5-fluorouracil (5-fu) were administered 3 times ... | 1988 | 3129645 |
| [buerger's disease: etiologic role of the rickettsiae?]. | specific seroagglutination tests were performed in 70 patients with buerger's disease to detect possible antibodies to rickettsia, the test being repeated in 8 cases after activation by doxycycline administration over 10 days. in 21 patients a weil-felix test was also carried out. tests were assessed as positive in 44 cases (62.8%): 18 times for rickettsia q. 18, 14 times for rickettsia mooseri, 13 times for rickettsia burnetii, 5 times for rickettsia conorii and 3 times for rickettsia prowazeki ... | 1987 | 3559416 |
| [effect of duration of sexual abstinence on the quality of human sperm in andrologic patients]. | between 1981 and 1984, 1063 patients (average age 32 years) were examined because of childlessness in marriage. the following parameters were evaluated in a first and second investigation: amount of ejaculate (ml), number of spermatozoa (mill./ml), motility (percentage of highly motile, motile, and non-motile spermatozoa immediately, 30, and 240 minutes after ejaculation), morphology (percentage of normally shaped spermatozoa), ph value, and fructose concentration (micrograms/ml), with special i ... | 1987 | 3617855 |
| the effect of corneal contact lenses on the oxygen tension in the anterior chamber of the rabbit eye. | the oxygen tension in the aqueous humor in the anterior chamber of rabbit eyes was measured continuously with a polarographic electrode. the normal oxygen tension in the anterior chamber was 23 +/- 2 mm hg (mean +/- sd, n = 4). a contact lens was then placed on the cornea for at least 10 min and the drop in oxygen tension recorded. a hard polymethylmethacrylate lens reduced the oxygen tension by 16 +/- 4 mm hg, and a larger hydroxyethylmethacrylate soft lens (soflens) decreased oxygen tension by ... | 1987 | 3654146 |
| [a case of moschcowitz syndrome associated with a rickettsia mooseri infection]. | | 1972 | 4268799 |
| effect of polynucleotides on aminoacyl transfer ribonucleic acid synthetases. 3. inhibition of glutamyl transfer ribonucleic acid synthetase by natural polynucleotides. | | 1968 | 4299520 |
| effect of polynucleotides on aminoacyl transfer ribonucleic acid synthetases. 3. inhibition of glutamyl transfer ribonucleic acid synthetase by natural polynucleotides. | | 1968 | 4299520 |
| study of a hydrophobic site on bovine alpha-lactalbumin by labeling with [125i]-tid. | the hydrophobic, photoreactive probe 3-(trifluoromethyl)-3-(m-[125i]iodophenyl) diazirine ([125i]tid) labels apo-bovine alpha-lactalbumin but much less his ca2+-form. the labeling of the apo-form is strong at protein concentrations of 0.5 mg ml-1 and increases with increasing concentration. furthermore, increasing concentrations of nacl, decrease the labeling of apo-alpha-lactalbumin with [125i]tid. | 1986 | 3741424 |
| structures of neorustmicins b, c and d new congeners of rustmicin and neorustmicin a. | | 1986 | 3759645 |
| recognition of typhus group rickettsia-infected targets by human lymphokine-activated killer cells. | lymphokine-activated killer cells caused significant lysis of target cells infected with typhus group rickettsiae (tgr) but not cells infected with rickettsia tsutsugamushi. monoclonal and polyclonal antibodies against tgr or tgr-infected cells failed to bind specifically to infected targets, as determined by flow cytometry or by immunoprecipitation of radiolabeled cell surface proteins. major unaltered antigenic determinants of tgr therefore cannot be detected on the surface of infected targets ... | 1988 | 3137174 |
| neuropathologic effects of proton-beam irradiation in man. i. dose-response relationships after treatment of intracranial neoplasms. | | 1972 | 4340051 |
| lipid peroxidation-induced inhibition of gamma-aminobutyric acid uptake in rat brain synaptosomes: protection by glucocorticoids. | incubation of rat brain synaptosomes with xanthine and xanthine oxidase (x/xo) resulted in an inhibition of gamma-aminobutyric acid (gaba) uptake. the inhibitory effects of x/xo were temperature- and time-dependent, and were characterized by an increased km for gaba and a decreased vmax. inhibition of gaba uptake by x/xo was associated with both the formation of malonyldialdehyde (mda) and conjugated dienes, indicating that lipid peroxidation was involved. studies with catalase, superoxide dismu ... | 1985 | 3882888 |
| [production of chemotactic factor for mononuclear cells from igg cleavage with neutral thiol proteinase of dog pmn leukocyte]. | | 1985 | 3897413 |
| comparison of a latex agglutination procedure with the microimmunofluorescence test for rickettsia typhi. | sera submitted to the texas department of health for the serodiagnosis of rickettsia typhi were tested by the microimmunofluorescent antibody technique and a new latex agglutination procedure. results indicated that the latex agglutination test was sensitive and specific and would serve well as a first-line screening test for murine typhus. | 1985 | 3920243 |
| transmission of murine typhus rickettsiae by xenopsylla cheopis, with notes on experimental infection and effects of temperature. | in studies on experimental infection of rickettsia mooseri (= r. typhi) in xenopsylla cheopis and laboratory rats, it was found that 10 days after the infectious feeding, the fleas were voiding feces that were infective to rats upon inoculation. the feces remained infective for at least the duration of the experiment, and a quantity as small as 0.2 micrograms of feces would result in seroconversion of 67% of the rats upon inoculation. fleas were capable of transmitting the infection to rats as e ... | 1985 | 3923852 |
| interferon-like inhibitor in mouse sera induced by rickettsiae. | | 1966 | 4381345 |
| splenectomy: an old issue of current controversy. | | 1986 | 3957756 |
| in vivo milk digestion in the calf abomasum. iii. amino acid compositions of the digesta leaving the abomasum. | calves were fed five different test meals: whole milk, skim milk, 3% whole casein solution, 3% whole casein in simulated milk ultrafiltrate, and whey. the digesta leaving the abomasum before feeding and during the first 7 postprandial hours were collected by fractions. after precipitation with 12% tca, the amino acid compositions of the sediments and the supernatants were determined and compared by multivariate analysis. the composition of prefeeding digesta was similar to that of gastric juice. ... | 1985 | 4023394 |
| [influence of the ventilation mechanics on the hematocrit value. i. research in rabbits subjected to experimental pneumothorax]. | changes in haematocrit value in rabbits subjected to pneumothorax were studied. significant increases and decreases were noted following pneumothorax and desufflation respectively. these are attributed to modifications of lung and systemic haemodynamics, resulting in diminished reflux to the heart and a consequent increase in capillary hydrostatic pressure; the latter provides the premisses for inspissation of the blood due to displacement of water towards the interstitial space. | 1974 | 4449621 |
| [effects of fluoride on passage of carbohydrates through the cell membrane of streptococci]. | | 1973 | 4512716 |
| [effects of thymosin on the humoral immune response to antibody-dependent cell cytotoxicity]. | | 1985 | 4065002 |
| immunoglobulin determinants on the surface of chicken lymphoid cells. | | 1973 | 4125244 |
| [method of standardization of the results of titration of rickettsia of the typhoid group on chick embryo]. | | 1974 | 4140965 |
| [a comparative analysis of the behavior of l forms of bacteria and mycoplasma in cell cultures]. | | 1973 | 4149907 |
| evidence of spotted fever rickettsial infection in japan as demonstrated by the indirect immunoperoxidase test. | | 1985 | 3938518 |
| synthesis, assembly, and secretion of gamma globulin by mouse myeloma cells. i. adaptation of the merwin plasma cell tumor-11 to culture, cloning, and characterization of gamma globulin subunits. | mpc-11 myeloma tumor cells were adapted to growth in continuous culture. the cultured cells resembled the parent tumor in that they produced the fully assembled gamma globulin molecules as well as six unassembled molecules. although cultured and tumor cells synthesized excess light chains, the molar ratio of light (l) to heavy (h) chains was approximately 1.7:1 in the culture, and 3.5:1 in the tumor. the cultured cells also produced fewer half molecules and free light chains than the parent tumo ... | 1970 | 4189836 |
| mechanisms of immunity in typhus infections. i. multiplication of typhus rickettsiae in human macrophage cell cultures in the nonimmune system: influence of virulence of rickettsial strains and of chloramphenicol. | monocytes from the peripheral blood of nonimmune human subjects transformed in cell culture into macrophages with increased phagocytic capacity for killed typhus rickettsiae. when such cells were exposed to living virulent rickettsia mooseri (wilmington strain) or r. prowazeki (breinl strain), or to the attenuated e strain of r. prowazeki, in the presence of medium containing normal human serum, all three strains readily entered the macrophage, but the subsequent fate varied according to strain ... | 1973 | 4200539 |
| newborn rats in the murine typhus enzootic infection cycle: studies on transplacental infection and passively acquired maternal antirickettsial antibodies. | this study focused attention on the newborn rat as a possible significant participant in the highly successful enzootic cycle of murine typhus. we examined the influence of maternal rickettsia typhi (r. mooseri) infection in rats on the offspring with respect to the possible vertical transmission of r. typhi and the passive transfer of maternal antirickettsial antibodies. transmission of r. typhi by rickettsemic pregnant rats did not occur either transplacentally during gestation to their fetuse ... | 1988 | 3142287 |
| effects of ouabain on cytosolic calcium in lymphocytes, platelets and adrenomedullary cells. | it has been suggested that a circulating inhibitor of na/k atpase can stimulate natriuresis and cause vasoconstriction in essential hypertension by stimulating transmembrane na/ca exchange to produce increased cytosolic concentrations of ionized calcium ([ca++]i) in renal tubular and arteriolar smooth muscle cells. if this inhibitor affected [ca++]i in all cell types, then clinical assays for its presence could be applied to easily accessible cells such as blood cells or platelets, and the inhib ... | 1987 | 3429864 |
| urban rodent-borne disease and rodent distribution in israel and nighboring countries. | | 1973 | 4212502 |
| deoxynucleotide-polymerizing enzymes of calf thymus gland. vii. replication of homopolymers. | | 1972 | 4636331 |
| [the ultrastructure of rickettsia mooseri]. | | 1973 | 4787699 |
| [the behavior of various enzymes and electrolytes of the blood vessel wall in experimental hypertension of the rat]. | | 1966 | 4230250 |
| [prostaglandins]. | | 1974 | 4816379 |
| historical basis of medical crimes in nazi germany. | | 1968 | 4870301 |
| effect of immunosuppressive therapy for renal transplantation in man on marrow and blood. | | 1968 | 4178180 |
| pediatric urinary tract infection. significance of vaginal bacteria. | | 1974 | 4208559 |
| [a case of cardiac insufficiency due to rickettsia mooseri]. | | 1965 | 4954134 |
| monkey-mouse hybrid cell lines containing the sv40 genome in a partially repressed state. | | 1970 | 4313231 |
| changes in interscapular brown adipose tissue of the rat during perinatal and early postnatal development and after cold acclimation. i. activities of some respiratory enzymes in the tissue. | | 1970 | 4315096 |
| perturbation of differentiated functions in vivo during persistent viral infection. iii. decreased growth hormone mrna. | lymphocytic choriomeningitis virus (lcmv) persistent infection that results from the inoculation of c3h/st newborn mice causes growth hormone (gh) deficiency and associated disease characterized by both reduced weight and serum glucose levels. molecular analysis of pituitary nucleic acids shows gh deficient mice have, on average, fivefold reduced levels of gh mrna although the histopathology of such gh producing cells is normal. northern blots indicate that the length of gh mrna is comparable in ... | 1987 | 3811236 |
| [physiology and biochemistry of rickettsia]. | | 1966 | 4972729 |
| [various patterns in the course of exanthematous typhus infections of epidemic and endemic types in guinea pigs]. | | 1967 | 4972894 |
| observations on rickettsia canada a recently described member of the typhus group rickettsiae. | | 1968 | 4975527 |
| plaque assay of rickettsiae in a mammalian cell line. | clear-cut and repeatable plaque assays were obtained for three rickettsiae of the spotted fever group (rickettsia rickettsi, r. conori, and r. montana) in vero cells used in a manner similar to that for arboviruses. in addition, three typhus group agents (r. typhi, r. canada, r. prowazeki) induced plaques in these cells. in preliminary tests coxiella burneti (nine mile strain) failed to produce plaques. comparable results were obtained in plastic flasks and plastic culture trays incubated in amb ... | 1974 | 4208640 |
| neutralization of murine typhus toxin by serum of normal human beings and monkeys. | | 1969 | 4307579 |
| clostridial myonecrosis of the abdominal wall. management after extensive resection. | | 1974 | 4369868 |
| [antimicrobial effect of benzthiazolquinones]. | | 1971 | 4398158 |
| is intra-arterial 5-hydroxytryptamine a potent algogenic substance in the dog? | | 1974 | 4435010 |
| [conjunctival and corneal damage through dithiazine iodide (author's transl)]. | | 1974 | 4449177 |
| acute renal failure in lambs. | | 1974 | 4530739 |
| a simple method for separation of rosette-forming cells (rfc), plaque-forming cells (pfc) and a rfc-free fraction from the spleen. | | 1972 | 4552835 |
| [human infection caused by rickettsiae and neorickettsiae in greece. detection of antibodies against r. prowazeki, r. mooseri, r. conori, r. burneti and neorickettsia q. 18]. | | 1972 | 4627735 |
| metabolism of rickettsia typhi and rickettsia akari in irradiated l cells. | l cells that had been exposed to 3,000 r of (60)co the previous day were used to study the growth and metabolism of rickettsia typhi and r. akari. viable (unirradiated) l cells were used to study the effect of rickettsial infection on host-cell metabolism. monolayers were infected with a rickettsial multiplicity of 1.2 and given eagle's minimal essential medium containing 25 mmn-2-hydroxyethylpiperazine-n'-2'-ethanesulfonic acid buffer and 10% calf serum. at various intervals, cycloheximide (2 m ... | 1972 | 4628863 |
| studies of the rickettsial plaque assay technique. | a plaque assay system for pathogenic rickettsiae, which utilizes primary chick embryo tissue cultures, is described. it proved to be a highly reproducible measure of infectiousness for rickettsia rickettsi and r. typhi, which were employed in most studies; as well as for r. canada, r. prowazeki, r. sibirica, r. akari, r. conori, and coxiella burneti. plaque-forming units (pfu) were compared to direct rickettsial counts and to 50% infectious dose (id(50)) values for embryonated eggs, mice, and gu ... | 1972 | 4629250 |
| murine typhus toxin: studies on identification of the neutralizing factor present in normal human serum. | studies were made on the isolation and identification of the rickettsia typhi toxin-neutralizing factor (tnf) previously demonstrated in normal human serum. by means of various methods of separating serum proteins, such as filtration on sephadex g-200, dextran precipitation, hydroxyapatite chromatography, and ultracentrifugation, tnf was found to be closely associated with purified serum beta-lipoprotein, although no serological relationship with this protein was demonstrated. lipase as well as ... | 1972 | 4629256 |
| circulatory transport of l-glutamine in fasted mammals: cellular sources of urine ammonia. | | 1972 | 4629801 |
| [test of specific neutralization of the hemolytic activity of typhus fever rickettsiae]. | | 1971 | 5000739 |
| [murine typhus revealed by pericarditis]. | | 1972 | 4632160 |
| [regional differences in cytoarchitectonics of the cerebellar cortex in man, rhesus monkey and cat]. | | 1972 | 4633415 |
| dna base composition of rickettsiae. | there is a small but distinct difference in dna base composition between the typhus and spotted fever groups of rickettsiae. the molar percentages of guanine plus cytosine for rickettsia prowazeki, r. typhi, and r. canada are approximately 30, for r. rickettsi, r. conori, and r. akari they are about 32.5. the percentage for trench fever rickettsia, rochalimaea quintana, is 38.6. | 1973 | 4633692 |
| mechanisms of immunity in typhus infections. 3. influence of human immune serum and complement on the fate of rickettsia mooseri within the human macrophages. | preincubation of rickettsia mooseri with human typhus convalescent serum, which is not rickettsiacidal but which confers passive protection to animals, opsonizes the rickettsiae for enhanced phagocytosis by monocyte-derived human macrophages in cell culture and renders them susceptible to destruction within the macrophages. nonspecific opsonization by preincubation of the rickettsia with methylated bovine serum albumin enhances phagocytosis, but the rickettsiae are not prepared for intracellular ... | 1973 | 4795469 |
| [phase-contrast microscopic studies of so-called "osmotic nephrosis caused by saccharose" in the mouse]. | | 1967 | 4879268 |
| [adaptory theory of protein biosynthesis]. | | 1971 | 4944706 |
| [immune animal organs from the viewpoint of culture]. | | 1965 | 4957016 |
| studies of rickettsia mooseri cell walls. ii. immunologic properties. | | 1967 | 4961125 |
| production of interferon in primary chick embryonic cells infected with rickettsia mooseri. | | 1970 | 4320735 |
| epstein-barr virus-associated antigens activated in human cells by 5-bromodeoxyuridine. | | 1972 | 4344263 |
| increased antibacterial resistance and immunodepression during graft-versus-host reactions in mice. | | 1969 | 4978202 |
| [mechanism of the positive ionotropic action of theophylline on the mamalian heart. i. influence of extracellular ca, na and k concentrations and of reserpine]. | | 1971 | 4257640 |