On the Radicvoactivwe in Various Organs Substances cf Fishes. *Masamichi SAIKI, Taishi UEDA, Yuzuru SUZUKI and Zenji MURAKOSHI _ lk Y-~ray puls hight analysis r—-ray 19 ad tly of Lons Se fishes Spectra were caught by the observed on various Survey Vessel] organa of “Shoyo maru”, Two peaks arised by ®Zn(Q,51 and 1.12 Me V. 3) were detected in almost all of organs, with a peak of natural *°KC(1,46 Me V. ). In the gill, intestine of % Zr-#3Nb was also and stomach contentg a peak found with peaks of ®4n and *#°K, ish intake tions % National Institute of Radiological Sciences

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