[Lysine overproduction mutations in the yeast Saccharomyces cerevisiae and its transfection into industrial Yeast strains ].

Yeast mutants resistant to a toxic lysine analog, thialysine were obtained by a method described in the literature. A strain excreting the maximum amount of lysine (0.45 g/l) was selected from these mutants.

[A toxicological study of the preparation Phytomix-40].

The results of toxicological evaluation of the new plant preparation Phitomix-40 (PM-40) used in the treatment of cancer are presented. To prevent a patient's individual immunological responsiveness to some phytoadaptogens, the preparation comprises 40 plant extracts (Rhodiola r. L.

[Specificity of replicating instability in Schizosaccharomyces pombe haploid yeasts].

UV-induced genetic instability in haploid Schizosaccharomyces pombe does not appear to be very locus-specific. This conclusion contradicts the data previously published by other authors. The possible causes for this discrepancy are discussed.