12 of the counts compared with the mean curve of the unexposed neutrophil counts showsthat children about 12 vears of age and below have more counts below than above the mean curveof the unexposed children of the same age range. How- below than above the mean unexposed curve. An accumulative percentage distribution of the counts (Figure 11) shows the exposed curve still to be slightly displaced to theleft. posed groups (Figure 9). It is this increase in their differential counts, 45% of the exposed and 55% of the unexposed had eosinophils of 5%or Eosinophil and monocyte and basophil counts are about the samein the exposed as in the unexposed groups. The eosinophil counts were quite high in both exposed and comparison populations, ever, above this age the distribution of countsis about the same. The mean of the lymphocyte counts shows an increase since last year’s counts of 33% in the ex- but were about the same in the two groups. In lymphocytes that accounts for the rise in the total white count noted above. The lymphocytes in the greater. exposed group are at the highest point since exposure, However, a scattergram (Figure 10) shows that more of the counts in the exposed group are’ Mean platelet counts have shown further recovery this year in both sexes of the exposed group compared withlast year’s results (Figure 12}. As Table 3 Rongelap Group and Control Mean Blood Counts by Day and by Age WBC (x10) Neutrophils (x10°) Postexposure day <3 D5 <5 D5 <5 >5 3 9.0 8.2 6.4 4.7 18 2.2 26 5.7 6.1 7 10 12 15 18 22 30 33 39 43 47 51 56 63 70 74 6-mo survey 4.9 6.6 59 59 6.7 7.0 7.6 6.5 5.7 5.2. 62 7.1 6.3 65 7.2 74 —_ 3.5 3.5 3.2 3.4. 43 3.0 Lymphocytes (x10) 061.2 0.9 — — — 0.3 3.4 —_ 24.9 0.7 1.3 30.4 19 4.2 3.6 2.2 5.2 4.7 3.7 *Excluding pregnancy. 98 11.2 69 8.0 4.0 +0 1.0 L.6 1.7 0.5 —_— 34 Rongelap controls, 3 yr Rongelap controls, + yr 10 2.5 — 20.1 — 24.1 76 7.0 1.6 — 20.2 — 24.7 2.4 2.1 10.7 8.9 1.9 — 18.2 — 21.7 3.1 3.4 Rita controls, 6 mo 14.0 11.9 — 23.1 — 26.2 3.3 3.5 28 Rita controls, 2 vr 0.7 3.4 2.6 05 L4 46 — Ol 15 0.9 17 61.6 09 09 Lt. 48 — 0.3 12.3 16.0 22.8 23.2 4.7 —- 08 11.8 15.1 22.4 23.2 8.3 Rita controls, | vr — 12.3 16.6 22.0 20.9 10.1 39 410° 3.3 48 —_ 14.1 17.9 25.5 26.8 1.8 24 2.3 2.2 — 6.6 69 7.5 9.7 >5 2.1 2.0 2.0 2.3 2.3 3.7 3.7 3.3 —- 11.8 8.6 8.9 13.2 <5 3.2 3.2 2.6 29 3.9 {-yr survey 2-vr survey 3-vr survey +-yr survey Majuro controls “>5 —_— 24.8 — 22.5 21.0 15.3 3.5 3.6 4.0 — 46 <5 — 24.9 — 21.7 21.8 15.2 35 3.9 3.8 — 6.6 Total group — 22.7 — 21.3 19.1 14.6 70 60 7.7 60 7.6 6.5 a 8.5 — Female allages — 28.2 — 27.1 21.8 16.8 5.3 3.8 3.3 2.6 2.6 2.6 _— Male >10 Eosinophils (x10 -) eo 2.6 2.1 2.1 17 24 19 24 21 2.6 21 40 3.1 3.0 2.0 3.8 5.6 Male <10 Monocytes (x10 *) — 4.5 3.9 41 4.7 5.0 78 6.2 3.5 3.2 5.9 6.7 Platelets (x 10°") 4.8 37 3.4 48 — 4.4 34 3.6 4.7 3.7 46 7A — 5.6 4.7 6.2 3.1 27 3.6 41 — 3.6 29 37 13.2 24.6 22.1 12.9 20.6 17.5 24.4 20.3 30.0 32.0 32.5 41,2 21.4 22.1 27.1 25.8 37.5 24.5 26.6 35.0 23.9 21.2 23.2 19.5 27.6 27.3 30.9 35.5. 24.2 32.6 38.8 10.9 26.9 30.7 25.5 28.1 30.8 36.5 23.1 20.3 22.6 24.7 — —_ 33.4 29.4* 27.6 30.0 34.0 — — 31.2 29.5 ao 2.9 1.7 42 54 3.0 2.3 2.7 1.7 19 =-2.0 1.4 bl — 16 19 Ld 3.5 2.3 18 1.1. 0.8 2.5 6.7 2.7 12 1.5 2.0 1.5 0.7 1.1 2.0 9.6 6.4 7.9 95 — — — L4 14 23 7 1.5 0.7 Ll 42 12.8 6.2 7.0 — 1.6 19 1.3 1.6 18 4.3 2.2 22 1.0 08 0.5 0.7 — 0.6 19 = 1.6 2.8 3.3 4.5 4.0 47 48 — 66 4.0 +45