32 counts at 11 years (7.4 « 10° in the exposed and 7.3 X 10° in the unexposed). Differential counts showed neutrophils and lymphocytes to have very nearly the same meanlevel red cel] counts and hematocrits at 11 years (see Figures 59 through 64). During the 12-year survey, counts were done only on the exposed group, and no comparison for exposed and unexposed Rongelapese at 11 with unexposed was done because of annual years. Graphic treatment of these elementsis presented in Figures 49through 54. The similarity of counts between the two groupsis probably best seen in the cumulative percent distribution curves (Figure 55). The levels of eosinophils, monocytes, variability in counts. However, the hematological findings at 12 years in the exposed group are not i i T i j i FEMALES and basophils were not remarkably different be- 1965 females (Figures 55 through 58). The closeness of counts in the two groupsis best seen in Figure 55. LEUKOCYTES ANO NEUTROPHILS « 10 > Erythropowetic function appeared to be aboutthe same in exposed and unexposed groups based on aT NEUTROPHILS x1073 tween the exposed and unexposed groups and were similar to the levels in past surveys. Platelet counts at 11 years were about the same in the exposed and unexposed in both males and Is LEUKOCYTES ok 6tte * ea 4— ~ 2h * é . at” W 2 40 DAYS o 3. + A * “> 4i 20 bls it pb 50 60 70 80 ac Figure 51. Neutrophil counts of Rongelap exposed I[emales plotted against age. Solid line represents mean ievel of unexposed female population, 1965. = it it 40 AGE (YEARS) tt 56 726! 2345 67 8 9 i 2 MO YEARS TIME 30 ‘ph Eto 45 NEUTROPHILS or lLitilitisi 08 s AFTER EXPOSURE T T T Figure 49. Mean neutrophil and white blood counts of Rongelap exposed people from time of exposure through 12 years post exposure. Stars represent mean values of comparison population. Ptitid tpi Pt tit bt Qa 2 40 56 72612345 67 89” DAYS MO YEARS TIME AFTER EXPOSURE NEUTROPHILS * 10°73 MALES 6.0 '965 . nm LYMPHOCYTES x 10°? MOTT TT TTT PAT Po TT i Figure 50. Mean lymphocyte counts of Rongelap exposed people from time of exposure through 12 years post exposure. Stars represent mean values of comparison population. 20 30 40 50 60 AGE (YEARS) 70 BO. Figure 52. Neutrophil counts of Rongelap exposed males piotted against age. Solid line represents mean level of unexposed male population, 1965.