pevses Table 4.8 HEMASOURIT, ALL EXPOSURE Gitot PS . Rengre Lap D ay . Milles ' 22 38.1 Females, Comb . . p88 Atliygginae 8 5 42.5 SHO . GB OUT 23 set we Miles Females oe BB a BK Utirth Comb Comb oe Comb Males +5 Adults GSB 40.7) 37.5 40.6 37.0 39.4 37.3 40.6 39,1 36.5 43.2 3H.0 36.7 37.0 38.9 : 26 45.8 28 40.3 95.3 38.0 25.6 Rongerth 45.7 24 30 SH.1 40,05 44.8 37.7 46.4 31.2 36.0 44.6 eh 52.0 S68 37.2 41.0 54.7 44.8 39,7 37.5 45.9 430.0 35,6 45.8 4U.0 37.2 36.39 9.4 46.9 42.9 44.5 ou 36.40 41,6 36.0 37.6 36.2 40.0 35,0 45.6 35.0 37.6 55.0 40.8 $0.7 44.0 36.2 37.6 46.7 35.9 49.6 36.0 45.2 35.0 47.0 35.7 39.7 44.0 98.5 45.2 37.3 40.6 37.8 43.0 47 42,8 Controle 38.5 But 49.2 37,0 40.6 . = ° : 45.4 45 : wt a . 40.3 37.8 45.0 37.8 40 44.9 "Age dn years, 4.12 COMPARISON OF HEMATOLOGICALFINDINGS IN CHILDREN AND ADULTS, RONGELAP GROUP It is seen from Tables 4.2 to 4.4 and Figs. 4.1, 4.2, and 4.4 that differences in the degree of depression of cellular elements werepresent between children and adults. In Table 4.9, the mean values of the neutrophile, lymphocyte and platelet counts at time of peak depression for each element are given in terms of absolute count and per cent of appropriate control value (mean platelet counts were calculated for the less than 5 and greater than 5 age groups for this comparison). 4 : ~t Table 4.9 COMPARISON BY AGE OF MEAN NEUTROPHILE, LYMPHOCYTE AND PLATELET COUNTS IN THE RONGELAP GROUP AT THE TIME OF PEAK DE PRESSION Absolute Count » 103 Per Cent of Control Type of Cell Age <5 Age <5 Age »5 Neut rophiic Lymphocyte Platetets 2.7 2.0 115 56 40 30 64 54 36 Age >5 3.1 2.2 122 It is seen that in terms of absolute counts, the children showed a greater depression of the neutrophile count, and_the same degree of depression of the platelet counts and less depression of the lymphocyte count. These differences can be most easily described at the time of peak depression. Expressed as per cent of control, all elements were affected more markedly in the younger age group. These results would indicate that children are more sensitive to radiation, or that other biological or physical factors resulted in a relatively greater effect. 4.13 4.13.1 DISCUSSION General An estimation of the severity of radiation damage incurred can be attempted by comparing the present results with previous hematological data on total ody exposure. The present data 82 ; ;