[Mutability of the liver cells in the progeny of irradiated male rats].

The descendants of the first generation of radiation exposed rat males exhibited an increased sensitivity of liver cells to the mutagenic effect of ionizing radiation as was determined by the incidence of chromosome aberrations. It is assumed that the stability of the hereditary apparatus of these animal cells is diminished due to the presence therein of radiation induced injuries of mutation and epigenomic origin at a heterozygous condition.