Colonial Guinea
Mostrando 13-16 de 16 artigos, teses e dissertações.
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13. Relation of capsular materials and colony opacity to virulence of Vibrio vulnificus.
Colonies which varied in opacity were isolated from the four strains of Vibrio vulnificus. Opaque and translucent colonial types of the strains were distinguished from the corresponding parent strains. Variation in the opacity of colonies formed by each strain was accompanied by variation of capsular material formation, which was clarified by electron micros
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14. Heterogeneity Among Strains of Mycoplasma granularum and Identification of Mycoplasma hyosynoviae, sp. n
Twelve filtrable, pleomorphic organisms isolated from swine joints and respiratory tracts had typical colonial and microscopic characteristics of mycoplasmas. They resisted penicillin and did not revert to cell wall-producing bacterial forms in media devoid of bacterial inhibitors. The morphological and growth characteristics of these mycoplasmas were simila
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15. Preservation of Neisseria gonorrhoeae by the gelatin-disc method.
Studies of Neisseria gonorrhoeae are difficult to perform because of the organism's poor survival in vitro. To solve this problem we tried to preserve the organism by a gelatin-disc method. The rate of survival and changes of variations in some biochemical properties of eight strains of N. gonorrhoeae were followed for three years. These studies proved that
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16. Virulence and phenotypic characterization of Yersinia enterocolitica isolated from humans in the United States.
Yersinia enterocolitica was recently reclassified into Yersinia enterocolitica sensu stricto and three additional species. With this new classification, it was of interest to reexamine pathogenicity previously ascribed to Y. enterocolitica. All available clinical isolates of Y. enterocolitica sent to the Centers for Disease Control from 1970 through 1980 wer