Studies on Cultural Requirements of Bacteria
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منابع مشابه
Studies on Cultural Requirements of Bacteria
It is a well-recognized fact that the nutritional requirements of an individual strain of any organism may be materially altered by prolonged cultivation on artificial media. Examples are so numerous and so well known that they need not be reviewed in detail. In many instances such changes are accompanied by alterations in the nature of the organism itself as in smooth to rough variation, while...
متن کاملStudies on Cultural Requirements of Bacteria: IX. Tissue Extractives in the Growth of the Diphtheria Bacillus.
It was shown in the sixth paper of this series (Mueller, 1935c) that the organic substances present in a tissue extract (liver) which are essential for the growth of a strain of diphtheria bacillus, could be very considerably purified. The method consisted in vacuum concentration of a hot aqueous extract, precipitation with alcohol up to 95 per cent concentration, and removal of the alcohol in ...
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Knowledge of the nitrogen compounds utilized for growth of ruminal cellulolytic bacteria is of considerable importance to an understanding of the nitrogen economy of ruminants and of factors affecting ruminal cellulose digestion. Work with mixed cultures of bacteria from the rumen has shown that cellulose digestion occurs with ammonia or urea, which rapidly yields ammonia, as the sole source of...
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phatic communion is a cultural concept which differs across cultures. according to hofstede (2001), the u.s. tends to have individualistic culture; however, asian countries tend to have collectivistic cultures. these cultures view phatic communion differently. in individualistic cultures like u.s., phatic communion reflects speakers’ socio-cultural relationships in conversations. to see whether...
15 صفحه اولStudies on the nutritional requirements of bacteria. II. On the nutrition of Shigella dysenteriae.
The synthetic medium for Shigella dysenteriae which has hitherto been known contains many amino acids and also niacin-amide, although the necessity of which remains obscure (5, 11,12) . We have been examining the process of the evolution of the bacterial nutrition (or the retroevolution), especially about the nitrogen source. It is the purpose of this paper to report the nutritional nitrogen so...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1935
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.30.5.513-524.1935