tk Table 7. Chromosome Aberrations : f Chromatid | No, o A berra- Ancuploid, Acentric Age: Cells Dicentrics ‘Examined tions** Cells Fragments | 5 Case . . Centrol? 2853 2,300 Rings 5 ; ' Cells with Total Chromosome Chromosome Others a4 | Abnor itiesmal-; Abnor itiesial- o 9 conn) ots) (02.3) 9 0 0 (10230) 5.5 39 200 40 3.5 15 0.5 0 | 05 6.0 T--8 37 100 2.0 2.0 0 0 0 ! 2.0 4.0 6.0 ) 0 | 05 1 K 4 K- 2 K--5 K- 6 K 9 K-10 32 200 4.0 35 200 45 45 36 / 32 35 200 200 200 20 9.0 3.0 4.5 35 200 33) 20 K-11 33 200 K-12 29 200 K Ko 13 28 i630 Total b 200 200 2.5u0 3.0 3.5 25 0.5 0 0 0.5 3.5 3.0 4.5 0.5 0.5 0 0.5 0.5 0.5 2.0 1.0 3.5 4.5 3.0 0.5 1.0 20 5.5 19 20 03 0.5 3.9 3.3 0.5 0 0 0.5 0 0 0 0 OS 4.0 | 15 6.5 20 1.5 20 6.5 5.5 7.0 0 0 0 0 | ' 0 0 1.0 0 oO 0.3 0 2.0 1.0 0.5 2% dont T- 3 K- i 4.0 4.0 6.5 6.5 6.5 4.5 5.0 5.0 6.0 6.5 5.5 7.0 3.5 + 1.0 15 3 3.5 3.0 ° IB 4 5.3 3.5 3.5 5.0 | 5.1 * Consisting of eleven healthy male. ** Not being included in *' Total chromosome abnormalities” and ** Cells with chromosome abnormalities ”. rate and H. Internal Exposure Gs 1) Whole Body Counting Gammaspectrometric analyses by whole body counting on the 13 exposed people indicated no significant increase of '’’Cs. No difference was recognized between the curves from the exposed persons and those from the controls. 2) Radiochemical Analyses of Urine "Cs analyses were carried out on 2+ hour urine samples from |0 exposed people and i+ normal persons. The '’Cs content of 112 pCi, 24 hrs. Considering the results of whole body counting and urine analyses, '’’Cs content of the exposed people is not different from that of the present normal Japanese. b. *°Sr+Y *°Sr analyses were done on the pooled urine samples collected from 3-5 exposed persons. As the control, 3 normal samples were analys- ed. No significant increase was found on the samples from the exposed persons. Summary Medical examinations were carried out from middle of January to middle of May 1964 on 18 persons expused to fall-out in the middle Pacific po arn 4 ‘"'T uptake, PBI conversion Triosorb tests were added. No abnormal result was obtained. mr mC respectively. As Case K-2 was suspected of a slight enlargement of thyroid, ye Cases T-8, K-2 and K-12 were measured. Data were +966, —2%6, and —2%4, aRSiehgh BAR: urines from the exposed people was distributed between 23.340.6 and 129.6+2.3 pCi/2+ hrs. and the mean '’Cs contents were 79 pCi/24 hrs. urine. On the other hand, the '’Cs content from normal urine samples was distributed between 37.841.7 and 191.1+2.6 pCi;24 hrs. and the mean '’’Cs contents were ae No abnormal value Soa Luke’s Hospital). was obtained. ha, aan | ** A chromosome or chromosomes being missing from or additional to one or more of the seven chromosome groups: the distribution in the remaing groups being normal.