解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::The deoxyribonucleic acid (DNA) of 36 isolates of Caryophanon latum and 3 isolates designated Caryophanon tenue, obtained from geographically diverse regions, has been examined for guanine plus cytosine (mol % G+C) base composition, genome size, and for relative reassociation levels. The isolates were found to be homo...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-195
更新日期:1976-09-01 00:00:00
abstract::A stable enrichment culture converting acetic acid to methane was successfully obtained from a pear waste digester, using a synthetic substrate solution with acetic acid as the main carbon source. This enrichment culture converted up to 10 mmol of acetic acid per litre per day at 35 degrees C and did not use hydrogen ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-194
更新日期:1976-09-01 00:00:00
abstract::Various soil fungi were tested for their capacity to degrade the insecticide [14C]photodieldrin. Of nine species investigated, Trichoderma viride was the only one which degraded the insecticide to an appreciable extent into water-soluble, non-insecticidal compounds within 4-5 weeks. These products amounted to 32-41% o...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-198
更新日期:1976-09-01 00:00:00
abstract::Two rod-shaped viruses of similar length occurring in hops were isolated from a mixed infection. One (hop mosaic virus) infected Nicotiana clevelandii, produced mosaic symptoms in mosaic-sensitive hop cultivars, and did not infect Chenopodium murale. The other (hop latent virus) infected C. murale but not N. cleveland...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-168
更新日期:1976-08-01 00:00:00
abstract::The respiration of Candida lipolytica on n-tetradecane is decreased in the presence of bentonite. This inhibition is less pronounced by the introduction of hydrophobic chains on the bentonite. Oxygen demand of resting cells varies with the length of hydrophobic chains. In fermentor, addition of adsorbant does not stim...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:1976-08-01 00:00:00
abstract::Cell-free extracts prepared from the extremely halophilic bacterium Halobacterium saccharovorum oxidize galactose and accumulate a product which reacts as if it were a lactone. The product does not act as a reducing sugar and contains all six of the carbon atoms initially present in galactose. The product was jugged t...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-174
更新日期:1976-08-01 00:00:00
abstract::Virus-like particles have been found in specific regions of the reproductive tracts of three different braconid wasps, all parasitoids of the tobacco budworm, Heliothis virescens. The particles are nuclear in origin, and Feulgen cytochemistry of particulate fluid in the calyx and oviducts of one species has revealed t...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-148
更新日期:1976-07-01 00:00:00
abstract::The correlation between the occurrence of indicator organisms and salmonellae in the same sample homogenate of various classes of dried foods was studied. In the first phase of the work involving 5837 samples, 1943 contained fecal coliforms and 100 contained Salmonella. Fecal coliforms were not detected in 53 of the S...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-141
更新日期:1976-07-01 00:00:00
abstract::The acetylene-reduction assay was used for in situ and laboratory assessment of biological nitrogen fixation in the acidic, waterlogged, muskeg ecosystem of the southern James Bay area, in the region of Moosonee, Ontario. In situ assays and subsequent laboratory experimentation revealed that nitrogenase activity was p...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-130
更新日期:1976-07-01 00:00:00
abstract::In our study of opportunistic pathogens, we have some indication that Staphylococcus aureus can increase resistance in mice against Pseudomonas aeruginosa. Intraperitoneal injections of sublethal doses of S. aureus had a protective effect in mice against lethal doses of P. aeruginosa, more so if living and coagulase-p...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:1976-07-01 00:00:00
abstract::Melanin biosynthesis in Verticillium dahliae Kleb, was studied with mutants deficient for normal black melanin or for production of microsclerotia. Seven genetically different mutants had apparent blocks in melanin biosynthesis. Four mutants (brm-1 to -4) produced brown microsclerotia and extruded pigments into media;...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-115
更新日期:1976-06-01 00:00:00
abstract::Examination of immune complexes between cells of Streptococcus mutans and homologous antiserum by the techniques of thin-sectioning and freeze-etching revealed that the cells were embedded within and extensive matrix 80-90 nm thick with defined boundaries. ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-129
更新日期:1976-06-01 00:00:00
abstract::Alkaline phosphatase (APase) was present in the bovine rumen in both cell-free and cell-associated states and levels of the enzyme varied with dietary regime. Reaction product deposition showed that the enzyme was associated with the mixed bacterial population. No enzyme was observed to be associated with protozoa. Tr...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-111
更新日期:1976-05-01 00:00:00
abstract::Iron and sulfur oxidation by Thiobacillus ferrooxidans as well as growth on ferrous iron were inhibited by a variety of low molecular weight organic compounds. The influences of chemical structure of the organic inhibitors, pH, temperature, physical treatment of cells, and added inhibitory or stimulatory inorganic ion...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-105
更新日期:1976-05-01 00:00:00
abstract::Bacillus stearothermophilus NCA 2184 lost viability and subsequently released cytoplasmic components when suspended in 0.1 M tris(hydroxymethyl)aminomethane (Tris) buffer (pH 7.2) and incubated at 60 degrees C. Cell lysis was prevented by the addition of 10 mM CaCl2 to the Tris-buffer suspension. Cells which were incu...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-073
更新日期:1976-04-01 00:00:00
abstract::Auxotrophs in three different races of Pyricularia oryzae were obtained following ultraviolet mutagenesis, and tested for complementarity on minimal medium. Prototrophic growth resulted between combinations of different auxotrophs of single strains, but not between strains. The growth did not result form crossfeeding,...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-079
更新日期:1976-04-01 00:00:00
abstract::Epiphytic tracer bacteris (a Pseudomonas sp. and an Arthrobacter sp.) from soybean buds were introduced into open flowers of greenhouse-grown soybean plants. Of the 177 resulting pods cultured after surface disinfection, tracers were recovered from within 24. Seed from two of these pods also carried tracers. ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-064
更新日期:1976-03-01 00:00:00
abstract::Growth of Neisseria perflava, Neisseria cinerea, and Neisseria sicca strain Kirkland in media supplemented with sucrose (0.5 to 5.0% w/v) resulted in the formation of giant cells. Response to sucrose was specific in that a variety of other carbohydrates did not mediate giant cell formation. Giant cells appeared only u...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-065
更新日期:1976-03-01 00:00:00
abstract::Species of Enterobacter and Serratia were examined for deoxyribonucleic acid relatedness to Klebsielleae, to atypical erwiniae, and to other members of Enterobacteriaceae. Deoxyribonucleic acid hybridization and then hydroxyapatite chromatography was the technique used to assess relatedness. Strains of Enterobacter cl...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-018
更新日期:1976-02-01 00:00:00
abstract::The morphology of Clostridium pasteurianum cells grown on 10(-2) M SO32- showed significant alteration in cell shape and the absence of the electron translucent reserve polysaccharide (amylopectin) when compared to sulfate-grown cells. At the lower sulfite concentrations (10(-3) and 10(-4)M SO32-) the cells showed the...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-036
更新日期:1976-02-01 00:00:00
abstract::Products obtained from the action of arylamine synthetase on [G-14C]chorismic acid were fractionated by gel filtration and ion exchange column chromatography to yield a partially purified radioactive component with an arylamine function. From its ultraviolet absorption spectrum and thin-layer chromatographic behaviour...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-032
更新日期:1976-02-01 00:00:00
abstract::An active in vitro protein-synthesizing system has been developed from Rhodospirillum rubrum grown under either photosynthetic or heterotrophic conditions. A protease activity has been found in both of these systems, and this activity can be readily inactivated by treating the cells with KCl and phenylmethyl sulfonylf...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-042
更新日期:1976-02-01 00:00:00
abstract::Incubation of 4'-chloro-4-biphenylol with a mushroom tyrosinase preparation gave the catechol, 4'-chloro-3,4-biphenyldiol as the sole in vitro metabolite. This compound was identical with the major rat urinary metabolite of 4'-chloro-4-biphenylol and thus confirms the structure assigned to the metabolite. This result ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-014
更新日期:1976-01-01 00:00:00
abstract::Several probes for measuring dissolved carbon dioxide (CO2) concentration were installed in a 68-litre fermentor and their effectiveness compared. Submerged silastic rubber tubing gave reproducible results over a wide range of operating conditions and was generally superior to all other probes evaluated. The silastic ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-007
更新日期:1976-01-01 00:00:00
abstract::Conidia of Torula caligans (Batista & Upadhyay) M. B. Ellis comb.nov. and T. terrestris Misra were examined by transmission- and scanning-electron microscopy. Torula caligans produced four-celled conidia in which the central cells were distinctly larger than the basal and apical cells. Conidia of T. terrestris were 4-...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-279
更新日期:1975-12-01 00:00:00
abstract::Cultured alveolar and peritoneal macrophages obtained from normal and immunized rabbits were used to induce wall-defective microbial variants of Pseudomonas pseudomallei. Variants were iduced only by normal alveolar macrophages. The variants reverted to typical Pseudomonas forms either spontaneously or upon transfer i...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-303
更新日期:1975-12-01 00:00:00
abstract::The tuberculin activity of protoplasmic extracts isolated from living BCG was purified successively by gel filtration on Sephadex G-100 and G-75, and by electrophoresis on 7.5% and on gradient (6-18%) polyacrylamide gels. The tuberculin-active fractions, as determined in BCG-sensitized guinea pigs, were used as the st...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-290
更新日期:1975-12-01 00:00:00
abstract::An intracellular invertase was induced in cultures of Clostridium pasteurianum utilizing sucrose as its carbon source for growth. This enzyme synthesis could be repressed by the addition of fructose of a sucrose-growing culture. In contrast, invertase activity was not affected by the addition of glucose to sucrose-gro...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-251
更新日期:1975-11-01 00:00:00
abstract::Aspergillus caespitosus NRRL 5769 growing in broth containing small amounts of sitosterol produced substance(s) with greater inhibitory activity against Candida albicans ATCC 10231 than in broth without sitosterol. Subsequent isolation, purification, and structural elucidation yielded 5,6-dihydro-5(S)-acetoxy-6(S)-1,2...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-259
更新日期:1975-11-01 00:00:00
abstract::The cultural, morphological, and physiological properties of Thermomonospora fusca (strain 190Th) are described. Its physiological properties show that this species is primarily a carbohydrate-degrading actinomycete which can use a wide range of plant sugars and polymeric carbohydrates as sources of carbon and energy....
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-267
更新日期:1975-11-01 00:00:00
abstract::Nonlinear survivor curves were obtained when spores of Bacillus cereus were heated in physiological saline solution. Curvilinear survivor curves did not appear to be caused by experimental artifacts but by the heterogeneity of spore population with regard to heat resistance. ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-217
更新日期:1975-10-01 00:00:00
abstract::Chloroquine increases the inhibition of cultured lymphocytes by high concentrations of phytohemagglutinin (PHA) or concanavalin A (Con A). The inhibition is also increased by complement. Thus chloroquine and complement have similar effects. Time-course studies show that chloroquine increases the rate of onset of the c...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-231
更新日期:1975-10-01 00:00:00
abstract::Enzymes induced by two Rhizobium trifolii bacteriophages caused depolymerization of exopolysaccharides from most R. trifolii and R. leguminosarum strains tested, but did not, in general, attack the exopolysaccharides of R. meliloti, the slow-growing rhizobia, or Agrobacterium. Ca2+ and (or) Mg2+ were required for enzy...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-239
更新日期:1975-10-01 00:00:00
abstract::Scanning and transmission electron microscopy was applied for a morphological study of three strains of Bifidobacterium grown on solid or liquid media. The pronounced pleomorphism of the cultures previously observed by light microscopy was confirmed. A possible sequence of the morphological events during transformatio...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-197
更新日期:1975-09-01 00:00:00
abstract::The physiochemical characteristics of the intracellular proteolytic enzymes of Oidiodendron kalari, a neuropathogenic fungus, were studied. The organism in the yeast phase was grown in a semisynthetic medium containing 1% tryptone, at 37 degrees C for 48 hr, on a gyrotory shaker. The crude extract was prepared by brea...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-204
更新日期:1975-09-01 00:00:00
abstract::The use of two pulsed lasers as excitation sources in the immunofluorescent technique FTA-ABS (fluorescent treponemal antibody absorption) shows that excitation of specimens by continuous or long-duration pulses of light (in the order of a millisecond) degrades the fluorescence in such a way that it is impossible to q...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:1975-08-01 00:00:00
abstract::A microplaque reduction assay for human and mouse interferons is described, using plastic disposable multicompartmental plates with flat-bottomed wells of 6 mm in diameter. The procedure is rapid and reproducible and lends itself to a considerable degree of automation. Its potential application in other areas of virol...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-186
更新日期:1975-08-01 00:00:00
abstract::Nitrogen-fixing, field-obtained root nodules of the silky green alder were studied by transmission electron microscopy. The nodule endophyte exhibited a prokaryotic cytology and was present in two forms: the hypha(0.3-1.0mum), which was branched and septate, and the vesicle (3-5mum), which was also septate and develo...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-157
更新日期:1975-07-01 00:00:00
abstract::The release of 14CO2 from 14C-labelled glucose(G-1(-14)C, G-3,4(-14)C, G-6(-14)C) was followed in phased cultures of Candida utilis grown in a glucose- mineral salts medium under altered conditions of carbon:nitrogen limitation at doubling times of 2,4 and 6, h. Changes in oxygen uptake and CO2 evolution were observe...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-150
更新日期:1975-07-01 00:00:00
abstract::A quantitative and qualitative survey of the indigenous Endogone population in wheat field soil and vesicular-arbuscular mycorrhiza in wheat roots as influenced by season and by the stage of development of the wheat plant was made. The number of Endogone spores in wheat field soil remained relatively unchanged in win...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-151
更新日期:1975-07-01 00:00:00