TTT NEUTROPHILS pa’ wheter eta 4 ofttlit si tired ptt te pi tt tpt pt 08 24 40 56 7261234 5 67 8 93 IO TI 12 13 14 15 DAYS MO YEARS -50 from time of exposure through 15 years post exposure. Stars represent mean values of comparison population. — MALES (AGE >10) _| PLATELETS x 1074 a 30 bot 5 6 tt Joi 7 6 39 Wilt 2 YEARS dt 13:14:15 TIME AFTER EXPOSURE Figure 40. Mean platelet counts of Rongelap people from time of exposure through 15 years post exposure. Stars represent mean counts of unexposed comparison populations. level. Neutrophil levels continued to show slight depression in the exposed group, except that in 1969 the smaller Ailingnae group showeda slight increase. Platelets continued to have the most depressed levels of the peripheral blood elements in the higher exposure group. Percentage differences 9006299 1 tt Lott chromos 14 i2 14 blood ly Sum: Pe: TPT Pe Tt T T T 8 oO TT OF wm Thee Marshal and late cussed b P' T 6 8 Duri about ¥ nausea. T rp oe <= oO LYMPHOCYTES x 107° Figure 39. Mean lymphocyte counts of Rongelap people aypt top 24405672 6 123 4 DAYS MO Lt pep 2.0 4.0 0 ty 2.0 be 4.0 gt ° NEUTROPHILS x 1073 LYMPHOCYTES x 1073 TIME AFTER EXPOSURE 08 CUMULATIVE % pi 89 WwW tl l2t31418 YEARS Gt i 4 EONgt td § Jott —+ EXPOSED, I5 YEARS POST EXPOSURE ++7--—+* UNEXPOSED 4 fj 1 4 since accident. Tt 67 4-4 . Figure 41. Percent difference in blood counts of exposed population. 4 residual with con blood el nuclear row exa dence o and unexposed Rongelap people over 15-year period post exposure. Stars represent mean values of comparison 40 PLATELETS (AVERAGE | COUNTS} 1 Figure 38. Mean neutrophil and white counts of Ronge-lap people from the time of exposure through 15 years OTT TTT TTT PTT Ot populat: 7 2550,6 2 4 6 8 iO onsMo}ven TIME AFTER FALLOUT TIME AFTER EXPOSURE T ZWHITE BLOOD CELLS (AVERAGE COUNTS} | -75- 4 F Tiprararte W . * TT 10 L 20 2 30 also exp PLATELETS x 107* and a fe Figure 42. Cumulative percent distribution curves for blood elements of Rongelap people in 1969. of the « between the exposed groups and the comparison population are shown in Table 20 and Figure 41. Generally higher counts were noted in the population of Utirik, which had received a very low dose of radiation, butit is difficult to compare the blood counts in the Utirik population with those in the Rongelap unexposed groups becauseof differences in environment and possibly in ethnic background. Morphological study of blood cells revealed the continued presence of atypical lymphocytes, particularly in the exposed population. These cells are similar in size to large lymphocytes orslightly larger, the cytoplasm is more basophilic, and the nucleus is more lightly stained with no indentation of the nucleus. Atypical forms were present in 27% of the exposed Rongelap group, 30% of the children of exposed parents, 12% of the unexposed population, and 10% of the Utirik population. The higher incidence in the exposed Rongelap group could be correlated with radiation exposure, but the high level in the children of the exposed 2 weeks and loss radiatio the Utir the peo} Pitre a” A TT shih gts * TT CONTROL BASELINE wn * * “4 FT L +25 PERCENT DEPRESSION ! n LEUKOCYTES AND NEUTROPHILS « 10° 42 peopl posur: depre had p whole ation urine. active n. Penetrat One c nificant levels of blood. T Rongelz in the o1 hemopo