[Relation between heterozygosity and fertility in Forest Nentzy and Nganasan tribes].

The relationship between heterozygosity for 13 polymorphic loci and fertility of women having passed the menopause was studied in two North-Siberian tribes: Forest Nentzy (N = 108) and Nganasans (N = 68). The number of pregnancies positively correlated with the individual heterozygosity (r = 0.2910 +/- 0.

[Tumor and stromal cell counts in the lung clones of transplantable rhabdomyosarcoma of rats determined by flow cytometry].

The phase G1-tumour cells of 76 lung clones obtained from rat transplantable rhabdomyosarcoma had near triploid mean DNA content (the diploid index (DI) = 1.46-2.05) and the phase G1/o-stromal cells was characterized by the diploid DNA content.

[Population of murine rhabdomyosarcoma MKh-53 clones under different proliferation conditions studied by flow cytometry].

Clones of rhabdomyosarcoma cells were obtained due to implantation of the tumor cells in the eye anterior chamber, in subcutaneous connective tissue and in lungs of mice. The DNA contents in the clone cells were measured using flow cytometry. Diploid indices of clones were calculated from the ratio of the modal content of DNA in G1-cells to the DNA content in lymphocytes contaminating these clones.

[Consanguineous marriages, inbreeding and its effects in the Taimyr Nganasans].

Genealogy, marriage structure, inbreeding and its effects in Taimyr Nganasans have been studied in detail. The population size in 715. 223 pairs were analysed.