[Relation of the radiosensitivity of yeast cells to the LET of the radiation. Experiments with diploid cells].

A study was made of the dependence of radiosensitivity D0-1 of diploid yeast cells on linear energy transfer L of radiation, and the obtained results were analyzed in terms of the previously developed model concepts. A diploid-specific repair of radiation damages was shown to be equally effective with different L. This mode of repair had no direct effect on D0-1 (L) function. The observed contribution of the diploid-specific repair to cell radioresistance decreased with increasing L. This, however, was due to physical and geometric factors rather than to the decreased efficiency of diploid-specific repair.