[The functional morphology of polytene chromosomes in the midge Chironomus pilicornis F. from the permafrost zone reservoirs].

The karyotype and chromosomal polymorphism of Chironomus pilicornis from the reservoirs of Yakutian permafrost zone are described. In the Yakutian populations, of 10 inversion sequences 11 genotypical combinations of these were registered. The level of inversion heterozygosity is 50-70%, but in several populations it makes only 11-29%.

[Effect of cyclosporin A and amphotericin B on protoplasts of Tolypocladium inflatum].

When added to the suspension of washed cells of Tolypocladium inflatum (cyclosporine-producing organism) in a concentration up to 100 micrograms/ml, cyclosporine A had no effect on permeability of the cell covers as judged by the quantity of the metabolites with the absorption maxima at 260 nm that leaked to the medium. When cyclosporine was added to the suspension of the T-inflatum cell protoplasts there was a significant increase in the metabolites leaking. Impairment of the permeability of the protoplast membranes was more marked in low potent strains.