10 Table 6. Mitotically Connected Abnormalities dicentric chromosomes and monocentric abnormal (per 1,000 Erythroblasts) chromosomes, Subject IBinucleated Xo Erbl. om T-3: 4 K—-1/) 33 T-8. kK-2/') ‘Karyomere | +: oO K— 4, K—5 067 13! K-38, K-9 0 2 K-ll 4 K~6, K-10: K-12. K-13: K-16 Normal 1 2 3 4 5 i 13. 13 0.67 2 27 2 4 0 0 2 2 572 13 + i { ; Mitosis | 0.67 0 7 OS 2 11.3 0 9 0 0.67 067 4 "9 0 0 0 Giant some in "Neutrophils "1b .- 4 Cperrant + 0 >: 0 _ = _ _ — 2 13 0 _ 0 4 _ ~ 0.67 + 1.3 7 0 0 _ _ 13 2 0 0 0 0 _ : chromosome-type which have never been observed in normal persons, occurred in them. Dicentrics were found in 7 cases, and monocentric abnormal chromo- somes were present in all of the cases examined. Also, aneuploid cells occurred in a high frequency. In view of the importance of these findings, long term observations are to be made. The chromosome abnormalities of these patients were reported elsewhere together with those of other radiation-exposed people, i.e. atomic bomb survivors, Thorotrast-injected patients, etc.'? G. Other Laboratory Studies Several laboratory studies were made on the subjects. The results of these examinations were mostly within normal range. Normal. _ Thymol turbidity test: _ _ _ Icteric index: _ Cases K-5, 6,8 and 9 revealed high values (7~10). F. Chromosome Studies Chromosome studies succeeded on 13 of the exposed persons. The observation of chromosomes was made by cultures of peripheral leucocytes prepared in accordance with the method by Moorhead, et al. with a slight modification. Samples were obtained 72 hours after initiation of culture, and 200 metaphases were examined in each culture for all the cases except one case. The control observations were based on 11 normal males, aged 28-53. The results of the observations are shown in Table 7. As shown in the table, frequencies of chromosome aberrations in the exposed persons were much higher than those in the normal. Further, Cases K-8, 11, 13 and 16 show- ed slight increase (nearly 9). Serum alkaline phosphatase: Cases K-6, 7, 10 and 11 indicated increased values (12~18 King-Armstrong In the histological sections, all showed nor- malities were found. However, some of them indicated slight abnormalities. ZIT: mal cellular marrow. c. Haemorrhagic diathesis As to the haemorrhagic diathesis, no abnor- abnormalities unit). GOT: No pathological data was obtained except for T-7 (70 Frankel unit). GPT: All data were within normal range. Paper electro phoresis: No abnormalfindings were obtained. Total cholesterol: All were normal. BSP test: Cases T~6 (12.5%), K-6 (5-7.5%) and K-13 (5-7.59) revealed slight high retention (45 min.). Erythrocytes sedimentation rate: All were normal. Tests for syphylis: All were negative. Routine urine analyses: A sample from Case T-7 was positive Feces; for sugar (1/10~1/494). Others were normal. No parasites were observed. PBI: Five cases were measured for PBI con- tent by courtesy of Dr. Tachibana (St.

Select target paragraph3