[Hygienic evaluation of staphylococcal nasal mucosal biocenosis in school children of an industrial city]. / Gigienicheskaia otsenka stafilokokkovogo biotsenoza slizistoi nosa shkol'nikov promyshlennogo goroda.

The results of microbiological spatial monitoring in Orenburg were evaluated. A biological variety of Staphylococcus on the nasal mucosa of schoolchildren were detected. The highest proportion of carriage of the pathogen Staphylococcus was found in different districts of Orenburg, which had the highest air pollution.

[Characteristics of recombination of heterosis hybrids of Drosophila melanogaster in high temperature conditions]. / Osobennosti rekombinatsii u geterozisnykh gibridov Drosophila melanogaster v usloviiakh vysokoi temperatury.

Spontaneous and high temperature-induced crossing over in regions b-cn and cn-vg of chromosome 2 was studied in Drosophila stocks and hybrids differing in fertility level and heat resistance. No essential distinction in recombination frequency was revealed in variants studied under the temperature 21-22 degrees C. The effect of temperature on 1- and 10-days imago during 4 or 7 h under 35 degrees C leads to increase in exchange frequency in the region b-cn. The hybrids show weaker reaction to this influence.