week. No bleeding associated with the platelet depression was noted and blood 3 of the Rongelap ind had diarrhea. a few complained ‘emained asympto- Nh Be fap] ~ © | LEUKOCYTES AND NEUTROPHILS «107? rey carried out at yout 100 exposed > were examined, ments made conature. The survey nstitutions in the Laboratory. The examinations, and burdens are being ' Rongelap indivinpies. transfusions were not necessary. Erythrocytes as measured by hematocrit levels were not significantly depressed. ou Oo. .8 bd 24 40 56 72 DAYS 6 MO | 2 3 4 5 YEARS TIME AFTER EXPOSURE Fig. 2: Mean neutrophil and white blood counts of exposed Rongelap people from time of exposure through five years post-exposure. Stars represent mean values of comparison populations neous lesions and 10-— ToT TT 1. It was apparent ‘xposure, that the 9 §F doses of radiation be sublethal since idiation exposure. thal range judging n addition radioints of radioactive o a woet Li - re 34 7 L = a = > 4 heral blood levels receiving approxi- 2 oO | Oo ; 2, 3 and 4. The 3 about half those ‘o months but no ncreased incidence erwise} was given were also signifiels by the fourth | b— « Fig. 3: 8 i 1 24 j l } 40 DAYS L 56 i 72 6 MO | TIME AFTER EXPOSURE { LL. L 2 3 4 YEARS ~25 Mean lymphocyte counts of exposed people from time of exposure through five years post-exposure. Stars represent mean values of comparison populations Following this early depression, the blood elements slowly recovered, some elements faster than others. The neutrophils were first to reach comparison population levels by about one year post-exposure (Fig. 2). The lymphocytes 317