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cytogenetic engineering in vivo: restoration of biologic complement activity to c5-deficient mice by intravenous inoculation of hybrid cells.splenic macrophages were identified as at least one source of c5 elaboration in normal mice. hybrid cells were formed from splenic macrophages from c5-deficient mice and either kidney cells from mice with normal amounts of c5 or chicken erythrocytes. these hybrids elaborated c5 in vitro. c5-deficient mice inoculated with these hybrid cells developed, in their serum, antigenically active mouse c5, as well as both hemolytic and biologic complement activity. these studies demonstrate the feasibilit ...19734131744
case records of the massachusetts general hospital. weekly clinicopathological exercises. case 26-1973. 19734196462
helium-cold induced hypothermia in the white rat. 19734692003
chronic benign lymphocytic meningitis. 19734699432
reactions of fluoride and carbonate ions during dissolution and mineralization of partially recalcified dentin. 19734703038
[non-specific pharmacodynamic properties of chlorpromazine (cpz) in relationship to the characteristic specific action of the drug]. 19734736261
a pool of naturally occurring rat liver ribosomal subunits capable of translating exogenous messenger rna. 19734763323
genetic differences in the structure of the mouse testes. 19734771359
sympathetic discharge rate in spontaneously hypertensive rats. 19734542949
changes in cell surface properties during the in vivo growth of moloney lymphoma. 19734575651
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 38.6.19734633692
characteristics of recovery processes in chicken spleen after trauma. 19724663531
non-existence of shunts between afferent and efferent arterioles of juxtamedullary glomeruli in dog and rat kidneys. 19724564193
[effect of a few carbon sources on the growth of mycobacterium bovis]. 19724568984
preparation of vaccines for rocky mountain spotted fever from rickettsiae propagated in cell culture. 19724621411
on the demonstration of circulating human endogenous pyrogen. 19724621751
the occurrence of homogeneous antibodies and antigenic selection of kappa light chains to streptococcal carbohydrates in monash rabbits. 19724625905
plaque formation in tissue cultures by rickettsia rickettsi isolated directly from whole blood and tick hemolymph.a simple technique is described for isolation of rickettsia rickettsi directly from tick hemolymph and whole blood of rickettsemic guinea pigs by means of the plaque assay technique in primary chicken embryo tissue cultures. plaque-forming units per drop of hemolymph were almost 100-fold greater for partially engorged ticks than for unengorged ticks. rickettsemia in guinea pigs fed upon by infected ticks was detected as early as 24 hr before fever. no morphological differences were noted between ...19724629203
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 ...19724629250
[therapeutic trial of etamocycline in the tropical disease department of the hôpital michel levy in marseilles]. 19724629614
inhibition of bacterial dna replication by 6-(p-hydroxy-phenylazo)-uracil. 19724402396
septic conditions of the equine foot. 19724404743
engrafted human bone marrow and blood cells in culture. 19724342797
attempted application of avian viral antibody test for detection of other microbial infections. 19724342893
a factor stimulating the transcription by nucleolar rna polymerase in the nucleolus of rat liver. 19724344283
phosphorylation of an endogenous membrane protein by an endogenous, membrane-associated cyclic adenosine 3',5'-monophosphate-dependent protein kinase in human erythrocyte ghosts. 19724344993
[the gas supply of hydrogen bacteria in submerged culture]. 19724196475
the effects of a soluble factor and of catecholamines on the activity of adenosine triphosphatase in subcellular fractions of rat brain. 19724265047
effect of dietary lysine level on plasma free amino acids in adult cockerels. 19725022194
[pathogenesis of inflammation and mechanism of the anti-inflammatory action of experimental peloid therapy]. 19725029442
the influence of chlorprothixene, methiothepine and reserpine on the resistance of the central nervous system of the rats against ischemia during ontogeny. 19725052812
amount, class and specificity of antibody to the lipopolysaccharide of salmonella enteritidis after immunization by various schedules. 19714993854
tick-borne typhus (rocky mountain spotted fever). epidemiologic trends, with particular reference to virginia. 19714995481
rickettsioses of central america. 19715002247
[economic losses from sheep toxoplasmosis]. 19714256464
cardiac output, heart rate, and blood pressure as influenced by equi-antiarrhythmic doses of eight antifibrillatory agents. 19714257638
[mechanism of the positive ionotropic action of theophylline on the mamalian heart. i. influence of extracellular ca, na and k concentrations and of reserpine]. 19714257640
haemocyte test--an easy, quick and reliable method for the detection of rickettsiae in ticks. 19714103616
in vivo depression of hepatic succinoxidase by sulfhydryl compounds. 19714324834
release of adrenal catecholamines by angiotensin i. 19714328014
release of adrenal catecholamines by angiotensin i. 19714328014
[lytic antibodies in antibacterial sera. ii. lytic activity of antibodies of different immunochemical type]. 19714938664
[the sulfametopyrazine-pyrimethamine combination in the treatment of 100 p. falciparum malarial attacks]. 19704928314
transduction by bacteriophage t1.amber mutants of the virulent coliphage t1 are able to transduce a wide variety of genetic characteristics from permissive to nonpermissive k strains of escherichia coli.19704920089
cardiovascular effects of angiotensin mediated by the central nervous system of the rabbit. 19704313656
monkey-mouse hybrid cell lines containing the sv40 genome in a partially repressed state. 19704313231
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 ...19704189836
evaluation of chloramphenicol acid succinate therapy of induced typhoid fever and rocky mountain spotted fever. 19704982445
rocky mountain spotted fever. laboratory infection in a vaccinated individual. 19704984704
serologic evidence of rickettsia canada infection of man. 19704985949
[detection of rickettsial and ornithosis antigens in the indirect hemagglutination test using erythrocytes chemically joined to polycondensed immune globulins. 1. use of sensitized erythrocytes prepared with the use of borofluoride bis-diphenyldiazonium for rapid demonstration of the agent of tick-borne rickettsioses]. 19704990580
hemolymph test. a technique for detection of rickettsiae in ticks. 19704992724
plaque assay system for several species of rickettsia.the plaque assay developed in this laboratory for the bitter root strain of rickettsia rickettsii has recently been shown to be appropriate for other rickettsiae.19694984178
plaque assay for rickettsia rickettsii.a plaque technique for the assay of rickettsia rickettsii is described. the method employs primary chick or green monkey kidney monolayer cell cultures with either an agarose or special noble agar overlay. plaques were counted in 6 days and resultant titers correlated well with ld(50) end points obtained by a standard assay in embryonated eggs. identification of the plaque-forming organisms was accomplished by direct observation of rickettsiae-like bodies in the monolayer lesions, inhibition of ...19694977475
[development of the antitoxin level in rabbit blood after injection of antidiphtheria serum. effect of a simultaneous injection of anatoxin]. 19694981112
tests on ticks from wild birds collected in the eastern united states for rickettsiae and viruses. 19694982220
electrophoretic behavior of sonicated human serum proteins. 19694190092
microbiological aspects of radiopasteurized chicken. nyo-3733-6. 19694313244
[the mystery of the human auricle. 2]. 19694922531
the role of selection in the host-mediated assay for mutagenicity. 19694895527
the role of selection in the host-mediated assay for mutagenicity. 19694895527
fundus changes in rocky mountain spotted fever. 19694974502
[mechanisms maintaining the genetic variability in a population (author's transl)]. 1969284828
[exanthematous typhus in ecuador]. 19684976285
experimental infection of lagomorphs with rickettsia rickettsii. 19684967159
the calculated nitrogen requirements of a single cell of escherichia coli. 19684869285
intranuclear growth of rickettsia rickettsii. 19684176643
"hypothetical mean organisms" of mycobacteria. a study of the classification of mycobacteria. 19684179142
the adrenal response of hamsters, gerbils and rats to exogenous corticotrophin or unilateral adrenalectomy. 19674289259
[trnas-spermatozoal transmission of microorganisms; apropos of ultrastructural observations in insects]. 19674229159
[a method of purifying leptospira cultures of extraneous microflora]. 19674890957
the pathogenesis of rocky mountain spotted fever in monkeys, infected by inhalation. 19674964161
experimental infection of the cotton rat sigmodon hispidus with rickettsia rickettsii.studies of experimental infection of the cotton rat, sigmodon hispidus, with the virulent sheila smith (r type) and the avirulent si 7 (u type) strains of rickettsia rickettsii were undertaken to evaluate the role of this native wild mammal in the ecology of rocky mountain spotted fever. the sheila smith strain, which was highly lethal for guinea pigs, was nonpathogenic for cotton rats. serial passage of the r-type strain in the cotton rat did not alter the virulence of the agent for cotton rats ...19674964475
rocky mountain spotted fever: clinical and laboratory observations of monkeys after respiratory exposure. 19664956209
infectious diseases in wild animals in utah. vi. experimental infection of birds with rickettsia rickettsii.lundgren, d. l. (university of utah, salt lake city), b. d. thorpe, and c. d. haskell. infectious diseases in wild animals in utah. vi. experimental infection of birds with rickettsia rickettsii. j. bacteriol. 91:963-966. 1966.-chickens, pigeons, pheasants, sparrow hawks, red-tailed hawks, ravens, magpies, and a marsh hawk were inoculated with rickettsia rickettsii, the etiological agent of rocky mountain spotted fever. the development and persistence of complement-fixing (cf) antibodies and ric ...19664956338
aerosol infection of monkeys with rickettsia rickettsii. 19664958344
relationship of cryptococcus neoformans to pigeons in milwaukee, wisconsin. 19664959230
staining rickettsiae in sections of formalin-fixed tissue; a 12-minute wright-buffer sequence. 19664164156
natural history of tick-borne spotted fever in the usa. susceptibility of small mammals to virulent rickettsia rickettsii.in the ecology of spotted fever rickettsiae, one of the as yet unsolved problems concerns the significance of small animals in the distribution of rickettsia rickettsii in nature. in the bitter root valley of western montana, a great variety of rodents, rabbits and hares are known to serve as the preferred hosts for the immature stages of the vector tick, dermacentor andersoni.the authors analyse the susceptibility of various species of small mammals to virulent r. rickettsii and evaluate their ...19665296999
infectious diseases in wild animals in utah. vii. experimental infection of rodents with rickettsia rickettsii. 19665917635
synthesis and processing of molecules bearing thymus leukemia antigen.thymus-leukemia (tl) antigens are expressed in murine lymphocytes under strict developmental regulation. to elucidate the molecular basis of tl expression, we have identified the molecular species that react with tl antiserum. at least three species can be resolved by metabolic radiolabeling of thymocytes and asl1 leukemia cells, lysis, immune precipitation, and sodium dodecyl sulfate-polyacrylamide. after a brief incubation with [35s]methionine, the only radioactive molecule recognized by tl an ...1966315985
comparison of the ultrastructure of several rickettsiae, ornithosis virus, and mycoplasma in tissue culture.anderson, douglas r. (national cancer institute, bethesda, md.), hope e. hopps, michael f. barile, and barbara c. bernheim. comparison of the ultrastructure of several rickettsiae, ornithosis virus, and mycoplasma in tissue culture. j. bacteriol. 90:1387-1404. 1965.-in an effort to make a valid comparison of the ultrastructure of several intracellular parasites, selected agents were propagated under identical conditions in a single type of tissue culture cell; such infected preparations were pro ...19654954556
results of a five-year survey for certain enzootic diseases in the fauna of western utah. 196514248984
the rocky mountain spotted fever group of rickettsias. 196514318051
[experimental transmission of rickettsiae to arthropods]. 196414249721
[pullulation of rickettsia ricketsii in rats infected by intraperitoneal injections of blood]. 196314101730
effect of dichlorotetrafluoroethane on the infectivity of viruses and rickettsiae sensitive to trichlorotrifluoroethane. 196314131240
studies on infectious diseases in wild animals in utah. v. experimental rocky mountain spotted fever in the coyote, canis latrans lestes merriam. 196314170550
[sensitivity of the bat artibus lituratus palmarum to rickettsia rickettsii]. 196314190216
cell-wall constituents of rickettsiae and psittacosis-lymphogranuloma organisms. 196313942448
[experiments on the problem of the transovarian transmission of rickettsia]. 196214000181
ecology of rocky mountain spotted fever in western montana. i. isolation of rickettsia rickettsii from wild mammals. 196214041199
factors affecting the growth of rickettsias of the spotted fever group in fertile hens' eggs. 196213917322
the transmission of low virulent strains of rickettsia rickettsii. 196113737980
spotted fever vaccine; potency assay by direct challenge of vaccinated mice with toxin of rickettsia rickettsii. 196113866804
identification of rickettsia rickettsii in the wood tick, dermacentor andersoni, by means of fluorescent antibody. 196013688983
the effect of red blood cells on experimental infection of white rats with the r strain of rickettsia rickettsii. 195813508659
virulent-avirulent conversions of rickettsia rickettsii in vitro. 195516589763
recovery of a rickettsia of the spotted fever group from microtus pennsylvanicus from virginia. 195413167137
the epidemiology of rocky mountain spotted fever. ii. studies on the biological survival mechanism of rickettsia rickettsii. 195413207101
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