Tabie 23 Mean Levels of Peripheral Blood Elements of Populations Under Study Plat. ( « 10°°) sed WBC (x 10°°) 1965 1966 1963 274 75*(56)"" ~~ F.3941.7 (356) FADE (16) 1966 1965 6.821.8(55) 3.6921.2 (56) 8.05-2.3(99) — — 3.86 1.8125) G.Q4H23(15) 1966 349-- 95 (16) xposed dren of entis)} dren of darents 28F+~ 7FICif4) — 7.342 2.20124) 416130 (48) — 1OA7HI5 (48) — 4.41220 (48) — 36622 96 (69) — 9.91226 (69) — 4.52+1.9 (69) — Lymph. ( x 10°*) 1965 sed 2.99--0.8 (56) sed 273+0.8 (16) posed iren of 2.82% 1.0( 124) Het. (%)} 1966 1965 2.450.8(54) 40.224.8 (56) 2.310.9(15) 3.00+1.0(98) BF7HLS (16) 3.5721.4(54) assed _ — Neut. { x 1077) 39.645.0 (16) — _— 40.5%5.0(124) ~ RBC ( x10") 1966 39 3.3041.9(15) 4.45 1.8(98) *#4.3(48) 39.7%4.6(15) 41,3+7.0(88) — 1965 42757 (50) 1966 — 438253 (16) ~ _ 443+53(111) _ — tis) 4.78419 (48) — 37.143.5 (48) —~ 441+41 (44) ~ arents 4.5541.5 (69) — 36.44:2.4 (69) — 439-34 (64) — lren of viation. **Number of people in group. or tissue shows advanced morbidity. iat longitudinal studies of aging gelap individuals and groups may ling as time goes by. ATOLOGICAL STUDIES | data are summarized in tables and the raw data on individuals e appendices. The more heavily » group whoreceived 175 rads ‘Rongelap exposed,” the Ron‘eceived a smaller exposure of .e exposed,” and the larger unn population of Rongelap as use of the small number of ae group, their data were not ase for the Rongelap groups, narized in a separate paraa are summarized separately in differences noted in age en the exposed and the un> the comparisons of mean levels for entire groups, comparisons are also made of age and sex groups, Ages 12 to 15, > 15 to 40, and =>40 years for each sex are compared. The hematological data are summarized in Table 23 and in Figures 49 through 65. In Appendices 8, 9, and 10 are presented summaries of the mean blood counts of the exposed populations and of the various comparison populations since exposure in March 1954. In Appendices It and 12 are listed the individual blood counts for 1965 and 1966. In Appendix 13 basophil counts are presented. In 1966, hematological studies (excluding platelets) were done only on the exposed populations of Rongelap, Ailingnae, and Utirik. Rongelap Population Leukocytes. The mean leukocyte levels were sightly lower at 11 years than at 10 years post exposure in both exposed and unexposed Ro gelap people. At 12 years the exposed (unexpr not done) showed slightly lower levels th 1965 (see Appendix 8}. There was no app difference in the exposed and unexposed