Hcinatological Effects on licavily Trradiated Japanese Fishermen evtes of the fishermen, Stable cells of _ (ry 0.14 (1/10) 2. 28 (9.13) 3. 45 (14-15) 2. 88 (15/16) 1.20 f *- 0.14 0. 46 (3,13) The hematological changes of Japanese fishermen exposed to fallout in 0,45 1954 were reported with other findings. (5/15) Generally speaking, it is difficult to estimate correctly the exposed radiation 0.56 (6, i6) dose soon after the accident. Therefore, treatment of heavilyirradiated persons should be decided by the daily appraisal of clinica] and laboratory findings. From this point, hematological changes are an important information to decide the therapy which should be given to heavily irradiated subjects. 0. 67 (612) 0.74 As to the Japanese fishermen, it seems to be very important as well as necessary to detect the significance of subtle changes such as they are still eT of cases eaamin ed., observed in hematological and cytogenetical examinations. “ere observed (Table 2). REFERENCES ‘markably higher than Amano, S. (1953): Genshi Bakudan Saigai Chosa Hokokushu. IJ, 914. iat stable abnormal ities ‘Ups according to the alues of neutro phils mean values of st able extent of the ini tial ondedto the esti mat- e observed in 5 case s. alities. While stab le otypes of their own, aryotypes. Nihon BrucER, M. (1961): ae ww Diagnosis and Treatment of Acute Radiation Injury, 27, World Health eIRCui ete r to the Ph! chro mo- ANDREWS, G.A., SITTERSON, B. W., KRETCHMAR, A.L. and NE REP 1...4 per cent Gakujutsu Shinko Kai, Tokyo. Leah ition... 67 per ce nt 29 per cent . SUMMARY (1/10) _{9'12) . posure, with following production of children. (i }* (4-10) Indica- tions of recovery were observed in some cases after about one vear, but mostly first signs of regeneration did not showearlier than about 2 years after ea- unstable cells % (6,10) 2.1] ° and morphological abnormalities of spermatozoa were also observed. rel Organization, Geneva. CRONKITE, E.P., Bonn, V.P. and Dunxuam, C.H. (ed.) (1956): Some Effects of Ionizing Radiation on Human Beings. Washington, D.C. U.S. Government Printing Office, Gusxkova, A.K. and Batsocotov, G. D. (1956): Proceedings of the International Conference on Peaceful Uses of Atomic Energy, 11, 35, United Nations, New York. HASTERLIK, R.J. and MaRINELLI, L. D. (1956): Proceedings of the International Conference on Peaceful Uses of Atomic Energy, 11, 25, United Nations, New York. HEMPELMAN, L.H., Lisco, H. and Horrmax, J.G. (1952): Annals of Internal Medicine, 36 279. : TsHiHARA, T. and Kumatort, T. (1965): Acta Haematologica Japonica, 28, 291. IsHIHARA, T. and kKumatori, T. (1967): Human Radiation Cytogenetics, 144, North Holland Publishing Co., Amsterdam. IsniHana, T. and Kumatoni, T. (1969): Japan Journal of Genetics, 44, Suppl. 1, 242. ilarities with he maz0a is describe d for mum numbers we re owering of mobility Jammet, H.P. (1961): Diagnosis and Treatment of Acute Radiation Injury, 83, World Health Organization, Geneva. Kikucui, T., Wakisaka, G., Akac!, H. and Goto, H. (1954): Bulletin of the In- stitute for Chemical Research, 4, Kyoto University, Kyoto. Kimura, K., Minami, E., Honpa, M. et al. (1956): Research in the Effects and Influences of the Nuclear Bomb Test Explosions, I, 497, Japan Societyfor the Promotion of Science, Tokyo.