GOT and GPT were observed in several cases. In 1974, ascites were proved in 2 cases, one of which was accompanied by diabetes mellitus and sepsis. These have recovered already. Ophthalmological examinations showed slight lenticular opacities in several cases. Its significance is not apparent yet. Other studies including thyroid studies are going on to detect late effects. Toshiyuki Kumatori, M.D. Head, Division of Radiation Health, National Institute of Radiological Sciences Chiba-shi, Japan ‘“ - 9006134 93 -