The effects of X- and γ-radiation on nucleic acid metabolism in the rat in vivo and in vitro

Abstract
Uptake of P32 by nucleic acids of rat spleen and thymus tissue in vitro was demonstrated, and the pattern of incorporation determined. Uptake of P32 by nucleic acids of lymph node cultures was reduced by 600 r X-radiation. In vivo X-radiation affects incorporation of P32 into DNA in the tissues examined; RNA susceptibility varies in different tissues. The variable sensitivity of animal tissues to X-radiation is discussed.