Abstract
Of the radioactive isotopes found to be present in the bodies of contaminated fish gathered by the survey ship“Shunkotsu Maru”in 1954, Zn-65 was quantitatively the highest (Kawabata, 1955; Yamada et al., 1955; Yoshii, 1955) . The enzyme, carbonic anhydrase, unicase and insulin are the major zinc-protein compounds. Numerous biochemical analyses of all types of tissue for the distribution of zinc, often with the aid of radioactive zinc-65 were reported. However, in spite of these extensive works, no histological study on the radiation injury of radioactive zinc-65 are presented.
The present work was undertaken to examine from the hi stol ogical view point the manifestations of injury caused by internal irradiation with zinc-65.
