[Pseudomutagenesis. The persistent increase in the level of cellular variability induced by radiation and some other agents]. / K probleme psevdomutageneza. Persistiruiushchee povyshenie urovnia izmenchivosti kletok, indutsiruemoe radiatsiei i nekotorymi drugimi agentami.

Electron microscopic investigation of capillary endothelium cells in myocardium of irradiated rats revealed an unusual effect of persistent increase of probability of cell damage, similar in many relations to that described earlier for various unicellular species. New effect, unlike those traditionally studied, is characterised by non-stochastic nature, large number of the involved cells, reveals itself even after faint influences, and can be induced as well by agents other than radiation. The question is put on the probable commonness between these changes and the pseudomutagenesis which has the similar phenomenology.