| Autor: |
N A, Khozova, Iu G, Suchkov |
| Rok vydání: |
1977 |
| Předmět: |
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| Zdroj: |
Genetika. 13(11) |
| ISSN: |
0016-6758 |
| Popis: |
Vitamin-dependent mutants were isolated from Yersinia pestis after the treatment with supermutagens. From 13 mutants obtained 10 appeared to be unstable. The stable vitamin-dependent mutants were revealed with the frequency of 2.5.10(-11) divided by 4.9.10(-11) by the indirect method of selection and 5.10(-7) by the use of Davis's method. The frequency of amino acid and nitrogen base dependent auxotroph isolation was significantly higher than that of the vitamin-dependent mutants. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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