ical E Hematologi T. KUMATORI 70 Table 2 Chromosome abnormalities in peripheral lymphocytes of the fishermen, and morphological abnor tions of recovery were ol data from 1965 to 1967. Teh culture: Cases Aneuploid No. of No. of examined analyzed Fishermen Stable unstable (1) (/)* cells % cells % 693 2. 88 13 881 2. 05 0.14 (1/10) Fishermen 15 1102 2. 90 Fishermen 16 1248 Fish 10 750 Fishermen 12 950 cases 10 Control 1963 . 1966 1967 48-h culture :; "1968= 1967 cells . ure, with following posurss cells % (9/13) 0.14 (1/10) 0. 46 (3/13) 2. 48 (14/15) (5/15) __asis) 2.27 1. 20 2. 28 : The hematologics 1954 were reporte (6/16) 0. 56 dose soon Adeci (8/10) 0. 67 (4/10) to decide the thera (9/12) (6/12) 2. 88 Generally speakin: the a ; should sons bi p: From this findings. As to the Japa 0.74 2.11 necessary t© detect | obs e rved * Number of cases showing B the abnormalcells Pper total number of cases examined. so high (Table 2). 2. 3. The frequency of stable abnormalities was remarkably higher than 4. The detailed analysis of stable cells revealed that stable abnormalities were divided following 3 types: a. stable cells with b. stable cells with c. stable cells with 5. In 3 cases small some were found. . Amano, S. (1953) : balanced chromosomeconstitution. ..67 per cent deletion of a chromosome .:.29 per cent excessive chromosome material...4 per cent chromosomes which are similar to the Ph! chromo. . Gakujutsu Sh ANDREWS, G. A. — Diagnosis an | Organization CRONKITE, Bee lonizing f° Washington | q Gusxova, AK.: . Conference 6. The examined fishermen wereclassified in 3 groups according to the degree of the injuries indicated by the minimum values of neutrophils shown shortly after the exposure. It was found that the mean values of stable and of unstable cells were higher in proportion to the extent of the initial damage. Minimum values of neutrophils roughly corresponded to the estimat- New York. Hasteruix, B.J Conferenc' New York. HeEMPELMAN, I ed external radiation dose. 7. Chromosome abnormalities in bone marrow were observed in 5 cases. All of these abnormalities were limited to stable abnormalities. Whilestable Medicine. ISHIHARA, T- 2 ISHIHARA, cells in the peripheral lymphocytes showed various karyotypes of their own, these in the bone marrow were limited to only a few karyotypes. North Hic . nl Te SPERMATOGENESIS Janet, HF} World As a generative tissue, spermatogenesis has many similarities with hematopoiesis. Therefore, the changes of number of spermatozoa is described for reference. The number of spermatozoa decreased, and minimum numbers were obtained in 16 cases about 8 monthsafter the exposure. “as iam ld kn oteSees Ton, Se a ee 7 : us . oe eh IE gtdaees Tay Te nt at ‘ay. ” aloshaAe es el iN ee in hematol : Unstable abnormalities such as dicentrics, etc. were observed (Table 2). in controls (Table 2). an Te eree a te w 0. 45 3. 45 2.00 first signs of regeneratit Lowering of mobility Kixucut, T- , stitute Kiauna, EK. Influen the Pr