[Changes in heat production in experimental animals during irradiation and administration of radiation-protective agents].

Due to the improvement of field method of oxygen consumption measuring, the instrument to realize simultaneous determination of micromammals heat production has been elaborated. These investigations estimated that the irradiation of mice at the dose of 3 mGy/hour caused the increase of heat production for 11.4%.

Genetic disorders in mice exposed to radiation in the vicinity of the Chernobyl nuclear power station.

Induced reciprocal translocations in spermatocytes of mice, either caught or exposed at the site, were observed at all levels of radioactive contamination around the Chernobyl nuclear power station. The frequency of reciprocal translocations was relatively low and increased linearly with increasing dose rate. Among 74 male mice exposed as early embryos, four reciprocal translocation heterozygotes were found.

[Genetic disorders in laboratory mice exposed in the area of the Chernobyl Atomic Electric Power Station].

Laboratory male mice (CBA X C57Bl)F1 were exposed in three sectors with different contamination degree of radionuclides within 30 km-zone of the Chernobyl Atomic Power Plant. The total absorbed radiation doses in testes were 0.1; 3 and 25 Gy, respectively.

[Reciprocal translocations in mice found in the vicinity of the Chernobyl nuclear power station].

A study was made of the incidence of genetic damage to germ cells of male mice taken from or exposed within the thirty-kilometer zone of Chernobyl, the contaminated no-man's-land around the reactor that failed. At all contamination levels mouse spermatocytes exhibited reciprocal translocations, a relatively low frequency of which increased with increasing dose rate. Heterozygotes, with respect to reciprocal translocations (5%), were found among males exposed to enhanced radiation background as early embryos.

[Genetic damage in domestic mice inhabiting in the areas with elevated background radiation].

Genetic effects of irradiation in males of wild house mice which were caught in the region of Chernobyl Nuclear Power Station were studied. The dose rate on the ground surface varied from 0.04 to 200 mR/h of gamma-irradiation.

Root absorption of 222Rn and its transfer into above-ground plant organs.

Experimental data are given on the content of genetically related pairs of radionuclides (226Ra and 222Rn; 224Ra and 220Rn) in soils and the above-ground phytomass of plants growing on plots with differing genesis of the higher concentrations of natural radionuclides in soils. Methods for determining gaseous radionuclides in the above-ground phytomass are described. Different transport routes of 222Rn and 220Rn into above-ground plant organs are considered.