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Probiotics: Growth-Promoting Factors Produced by Microorganisms

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Probiotics: Growth-Promoting Factors Produced by Microorganisms Authors:
Lilly, Daniel M.; Stillwell, Rosalie H. Publication:
Science, Volume 147, Issue 3659, pp. 747-748 (Sci Homepage) Publication Date:
02/1965 Origin:
10.1126/science.147.3659.747 Bibliographic Code:


Several species of protozoa, during their logarithmic phases of growth, produce substances that prolong the logarithmic phase in other species. The effect is not as striking as the inhibition of growth caused by antibiotics, but a consistent 50-percent increase in growth has been obtained with Tetrahymena pyriformis in response to a factor produced by Colpidium campylum.
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