| 60 | 70 i 80 RBL« 1 ® Figure +3. Individual red blood counts of exposed females plotted against age at 5 vears post exposure, 1959. Solid line represents mean values for comparison female popu- AGE (YR) lation. 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. 100 i T co \ \ | L t “eo TOTAL COUNT 37 i 45 Rac xio § LL 49 ! 33 ‘5 37 T T T | ~ 4 ' l T -—— MEAN OF 53 NORMAL AMERICANS AGE >15 7 ---- MEAN OF I? MARSHALLESE|” AGE > 15 @=UNEXPOSECD POPLLATION PERCENT T PERCENT OIFFERENTIAL OF RED CELLS BETWEEN THRESHOLOS = T O=5 YEARS POST EXPOSURE CUMULATIVE 9 20 25 3 335 1 40 45 50 55 THRESHOLD i a =e 60 65 70 L 75 80 . Figure 45. Price-Jones sizing of red cells showing mean of 17 Marshallese curves (from both exposed and comparison groups) compared with mean curve of 53 Americans. Figure 44. Cumulative distribution curve, Rongelap red blood counts, 1959. deficiency. The serum proteins and serum vitamin erythropoetic depression compared with the unexposed 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) com- ‘pared with Americans. The cause is unknown. Apparently it is not due to iron deficiency, since serum iron levels are generally normal. It may possibly be based on another type 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 account for it. Hematological Leukemia Survey Differential counts showed no increase in im- mature leukocytes that would cause one to suspect leukemia in either the 1959 or 1960 survey. Alkaline Mel. i 30 ~~ ! 40 ny a f 30 one { Pd ABC at ® L 40 30 AGE (¥R)