GROWTH-INHIBITORY SUBSTANCES IN PNEUMOCOCCUS CULTURES
نویسندگان
چکیده
منابع مشابه
Growth-inhibitory Substances in Pneumococcus
In the study of bacterial symbiosis and antagonism, considerable interest has centered in the presence or absence of growth when organisms are reinoculated into filtrates of cultures of the same or different species. The nature of the substances which favor or inhibit the simultaneous or subsequent development of bacteria in the same nutritive medium has provoked much discussion and stimulated ...
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1. It has been shown that the whole uncoagulated blood of immune animals is not as highly pneumococcidal in vitro, as has been claimed by others. 2. Cultures of pneumococci in the fresh whole blood of immune animals, as compared with cultures in the blood of susceptible animals, show a greatly prolonged latent period, and, in a general way, the relative lengths of the latent periods of the cult...
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71 samples of milk and dairy products were collected from 18 cities throughout Iran. 93 strains of lactic acid bacteria (LAB) were isolated and assayed against four opportunistic patho gens including E. coli, proteus and klebsiella as gram-negative and S. aureus as a gram-positive organism. All indicators (organisms) were hospital strains. Among isolated bacteria, lactobacilli (37 isolates)...
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1. The effect of inhibitory substances upon cell divisions in chick tissue cultures has been studied mainly by phase-contrast cine-micrography. 2. Fluoride and powerful -SH reactants prevent the entry of cells into prophase within I hour. 3. Aminopterin and colchicine are complete spindle inhibitors; they prevent its formation at the end of prophase, and can act on all metaphase cells in the cu...
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1. Conditions which favor the formation and accumulation of peroxide in broth cultures of pneumococcus are free access of air, and the absence of catalase, peroxidase, and other catalysts capable of decomposing this compound. Under these favorable conditions peroxide becomes demonstrable in the culture fluid during the logarithmic phase of growth and persists for a period of at least 6 to 12 da...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1924
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem.39.3.335