LYMPHOCYTES x 1073 computed to obtain information about the effect of radiation over time in relation to sex, exposure, Certpiesie 0 8 24 56 «40 Oays ?2 TIME e 61234 5 67 8910 MO YEARS AFTER EXPOSURE and age. ‘A generally similar pattern was observed in these analyses for all four components. Thevariation among years was alwayshighly significant, largely because of an increased countin all four components in 1964. This annual difference has been commented on in previousreports. Differences existed in 1961, 1962, and 1963, but these were not chronologically consistent among the com- Figure 30. Mean lymphocyte counts of exposed Rongelap people from time of exposure through 10 years post exposure. Stars represent mean values of comparison population. ponents. . “A clear-cut and highly significant decrease in all four blood components was observed for the exposed population comparedto the nonexposed. There wasalso a highly significant decrease in TOT T | 7.0 MALES 1963 | 1 | y . i 20 { 30 L J 40 50 AGE (years) | 60 i TO i BO * 4 | . e 40h 30 oT MALES 1964 ° e . I o 9 LYMPHOCYTESx 107° LYMPHOCYTES x 1073 6.0F Lou 10 1 4. . 4 2.0r . 90 1.0 L fo 40 l 50 | 390 AGE (years) Figure 31. Lymphocyte counts of exposed Rongelap males plotted against age. Solid line represents mean level of unexposed male population, 1963. TO ] I 5.0L J 7 Figure 33. Lymphocyte counts of exposed Rongelap males plotted against age. Solid line represents meanlevel of unexposed male population, 1964. FOr I T TT r FEMALES 1963 T FEMALES i964 60 40 4 s0- -* 4 20 LYMPHOCYTES x 10°73 LYMPHOCYTES x 1073 e 5.0 . . 4 40 | _ 30 7 2.0 loL Lt 10 20 | 30 l 1 40 50 AGE (years) 4 60 ! 70 80 i 90 Figure 32. Lymphocyte counts of exposed Rongelapfemales plotted against age. Solid line represents mean level of unexposed female population, 1963. O00bE11 1.O 7 Lud 10 Joe 20 30 { 40 | 50 AGE (years} ji 60 TO | 80 90 Figure 34. Lymphocyte counts of exposed Rongelapfemales plotted against age. Solid line represents meanlevel of unexposed female population, 1964.