Abstract
D-Amino acid oxidase activity was measured with the liver and the kidney of rat bearing atypical epithelioma of Guerin strain. Comparing with normal case, the enzyme activity of the liver of rat bearing tumor was markedly decreased. However, significant change was not observed between the enzyme activity of the kidney of rat bearing tumor and that of normal rat. Flavin content was decreased both in the liver and in the kidney of rat bearing tumor.
