Induced morphologic variation in B. coli
نویسندگان
چکیده
منابع مشابه
Morphologic Variation in Pneumococcus
The problem of morphologic variation in pneumococcus has been reviewed and the desirability of studying such variation through an examination of bacterial cells rather than of bacterial colonies has been pointed out. To further this objective, a new terminology to describe the morphologic variants of pneumococcus, potentially applicable to other bacterial species, has been proposed. A hitherto ...
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SUMMARY This study is designed to confirm the changes of various bones in the osteopetrotic op/op mouse. The female adult mouse were sonicated in papain solution. After the complete treatment, the bones (Skull, Mandible, Scapula, Humerus, Radius, Ulna, Hip, Femure, Tibia, Atlas, Axis and 5th Lumbar vertebra) were measured three dimensionally using of high quality scale and low power binocular ...
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Nutritionally induced filamentous cell forms of Escherichia coli B were examined for their morphological and biochemical lesions. The filamentous forms showed no significant alteration in total DNA concentration, RNA synthesis, ability to form beta-galactosidase in response to isopropylthiogalactoside, or insensitivity to actinomycin D as compared to the normal cell form. The filamentous cells ...
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Since Dawson's description of a rough variant of pneumococcus (1), little has been written concerning the bases for morphologic variation in this species. Recent studies of the effect of transformation reactions upon the morphology of pneumococcus (2-4), however, have created renewed interest in this subject and have made desirable also reconsideration of the problems of colonial variation in b...
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Lymphocytes obtained from mesenteric lymph nodes of rabbits were stimulated in vitro by concanavalin A and injected into the corneas of allogeneic hosts. Controls were nonstimulated, killed, or autogeneic lymphocytes injected into the contralateral corneas. The stimulated cells were significantly better inducers of neovascular growth. Histologic observations of the vascularized corneas showing ...
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ژورنال
عنوان ژورنال: Journal of Infectious Diseases
سال: 1921
ISSN: 0022-1899,1537-6613
DOI: 10.1093/infdis/29.5.591