[Genetic and biological characteristics of noninbred mice from the ICR colony]. / Geneticheskaia i biologicheskaia kharakteristika neinbrednykh myshei kolonii ICR.

Noninbred mice of the ICR colony were studied by a set of characters making it possible to estimate the range of genetic polymorphism in the given population. Genotypes of mice for loci A-, B-, D-, S-, PP, Se Se, and cc were determined. Noninbred mice were polymorphic for loci A, B, D, and S. Frequencies of recessive alleles of loci A, B, and D was calculated. Noninbred mice have a high fecundity and a low level of embryonic mortality, which indicate population heterogeneity. The age of the mother was shown to have no effect on the ovulation norm. The population standard of the colony for age-dependent change in the body weight and size was established. Age-dependent survival in females and males was shown to be associated.

[Normalization of intestinal microflora and the general condition of mice of the JCR line as affected by Bifidobacterium concentrate]. / Normalizatsiia kishechnoi mikroflory i obshchego sostoianiia myshei linii JCR pod vliianiem kontsentrata bifidobakterii.

It was shown experimentally that the use of liquid Bifidobacterium concentrate (B. bifidum 791 and B. adolescentis MS-42) led to normalization of microflora in mice which resulted in the improvement of the animal general state: increase of body weight, lower death rate, decreased late embryonic mortality, better hair growth.