The d-Amino Acid Oxidase , Uricase , and Choline Oxidase in Two Transplanted Rat Tumors and in Isolated Nuclei of Tumor Cells *

Abstract

In order to determine whether or not changes in enzymatic activity specifically accompany neoplasia, and to what extent such changes may occur, many enzymes have been investigated by Greenstein (2) in both normal and neoplastic tissues. Shack (3) has reported that d-amino acid oxidase is low in rat hepatoma 31, and suggested that the lowering of the enzyme… (More)

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