Abstract
The influence of desoxycorticosterone acetate (DCA) admn. on the radiation effect of X-rays on spleen, bone-marrow and sudanophile substance of the adrenal cortex of mice is described. No change was observable in the X-ray induced effects in the spleen. In the bone marrow, however, a more rapid regeneration of bone marrow was noted in DCA-treated animals and the loss of sudanophilic material in the adrenal cortex was retarded.