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  • Title: [Biological characteristics of the variants of Bacillus thuringiensis subsp. galleriae formed during continuous culture].
    Author: Blokhina TP, Rautenshteĭn IaI, Sakharova ZV, Rabotnova IL, Zaboĭskaia RA.
    Journal: Mikrobiologiia; 1985; 54(4):683-4. PubMed ID: 4058330.
    Abstract:
    Bacillus thuringiensis subsp. galleriae S. variants formed during continuous cultivation differ from the parent culture in certain properties. In contrast to the parent R form, their growth in the chemostat does not yield virulent mutants which can cause their lysis on solid media. The chemostat S forms are resistant against virulent phage mutants produced when the R variants are grown under the conditions of continuous cultivation and against a virulent phage obtained from the parent culture 69-6 under the action of vancomycin. The R forms are sensitive to these phages. When the S forms are grown under the chemostat conditions, they do not revert to the R forms. The R and S forms do not differ noticeably in the character of their growth, formation of spores and crystals, and biological activity.
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