37 T ! T ! T ! 6 T T T T T T T T RONGELAP UNEXPOSED (959 6b . e . 4 Rec x 107% St *. s/ Qo RONGELAP UNEXPOSED 1959 | ° e « o 4 ee oO a * ab 4 e e e . ote * e ° x . ° 8 . eo? e . °; eo e | e e oe abe 4 « 3 * 1 Te) i 20 f 30 L 40 e 3 | io | 20 | 30 L 40 50 AGE (YR) L 60 J 70 ! 50 ! 60 L 70 I 80 AGE (YR) l 280 Figure 43. Individual red blood counts of exposed females plotted against age at 5 years post exposure, 1959. Solid line represents mean values for comparison female population. Figure 42. Individual! red blood counts of exposed males plotted against age at 5 years post exposure, 1959. Solid line represents mean values for comparison male population. T T T T 26 loo E T T T T 2 T T T T T T T T T BETWEEN THRESHOLDS 244+ O=5 YEARS POST EXPOSURE @ = UNEXPOSED POPULATION » ak 22 + Se TOTAL COUNT 20 L CUMULATIVE PERCENT T PERCENT DIFFERENTIAL OF RED CELLS | — MEAN OF 53 NORMAL AMERICANS AGE >I5 ; AGE > 15 18E 4 16 4 lab 4 2b 7 lob 4 at J 67 4 2 | ! 4.1 45 ! 4.9 1 5.3 a7 7 ~--- MEAN OF I7 MARSHALLESE 4e- 37 4 4 , 4 1 ! I5 20 L 25 1 1 1 1 1 30 35 40 45 50 55 THRESHOLD i “Cc 1 r 60 65 70 i 75 80 Rac x1o°§ Figure 44. Cumulative distribution curve, Rongelapred blood counts, 1959. Figure 45. Price-Jonessizing of red cells showing mean of 1? Marshallese curves (from both exposed and comparison groups) compared with mean curve of 53 Americans. erythropoetic depression compared with the unex- deficiency. The serum proteins and serum vitamin posed levels, but not as distinct as indicated by erythrocyte counts in 1959. It would appear from these findings that some bone marrow damage persists at 5 years post exposure. The Rongelap people generally have a slight anemic tendency(very slightly microcytic) compared with Americans. The cause is unknown. Apparently it is not due to iron deficiency,since serum iron levels are generally normal. It may o- it a= cD cn cry cl> possibly be ESijgd on anothertype of nutritional B,, levels, however, tended to the high. The continued high level of eosinophils is unexplained. It was not believed that the types of intestinal parasites noted on a previous survey could accountforit. Hematological Leukemia Survey Differential counts showed no increase in immature leukocytes that would cause one to suspect leukemia in either the 1959 or 1960 survey. Alkaline