[LEP gene allelic polymorphism in a subpopulation of Ayrshire cattle].

Genotyping of the leptin gene locus (LEP) (SNP: R25C, Y7F, and A80V) has been conducted in cows from two cattle droves (n = 106 and n = 34) and in bulls of Ayrshire cattle (n = 9) that are intensively used at present for artificial insemination in cows in Krasnodar krai. The absence of A80V polymorphism (C --> T at position 95691973 bp of leptin gene) has been established in the genotypes of Ayrshire cattle as compared to Holstein cattle; however, the F allele (Y7F site A --> T at position 95689996 bp of LEP gene), which is rare in Holstein cattle, was shown to be frequent in Ayrshire cows and producer bulls (with a frequency of 0.22-0.

[The choice of reconstructive operation in the treatment of patients with breast cancer].

170 patients, operated on the reason of breast cancer, received reconstructive surgery. Of them 63 had simultaneous organ preserving surgery with extramammary tissues translocation; 52 had organ preserving operation with the use of reductional mammoplasty and 55 patients had subcutaneous mastectomy with nipple preservation. Results of the study demonstrate that the method of organ preserving surgery with extramammary tissues translocation has more possibilities.

[Variation of the BoLA-DRB3 gene in dairy cattle and its effect on the viability parameters].

Genotyping of the BoLA-DRB3 alleles was performed in dairy cattle of Krasnodar krai and Holstein stud bulls. Loss of heterozygosity, which decreased the reproductive parameters, was observed. It was proposed that stud bulls be selected on the basis of their genotyping at the BoLA-DRB3 gene to prevent further decay of cattle viability.

[Motor activity of paramecium].

A systemic study of the mechanisms of motor activity of paramecium was carried out. The movements of paramecium responding to various influences were photographed. The analysis of the data revealed the time dependences of the rate of movement, rate of rotation, and the radius and the pitch of the helix trajectory.