32 7 q t q TO ! T q MALES e SOF / 40- 4 45 | e es 40+ Be q 4 e 35 t ' 1 FEMALES e ° e i ° ® @e ft . e s e 35 - ~ UNEXPOSED @ ; ' ! 4 | ee t e e ° e eq 6 a 1 | 10 \ 20 30 i 40 AGE {YR) rt LL 50 i 60 70 80 _ ale: 10 |g. 20 e l L 30 40 AGE Figure 47. Hematocrit values of exposed males plotted against age. Solid line represents mean level of unexposed male population. T e 30 LL i 50 L 60 T © EXPOSED MALES >? @ UNEXPOSED MALES >? L 46 b 5.0 Rec xi07§ , 5.4 J 48 Mm L 4.2 CUMULATIVE Ma PERCENT PERCENT \ 38 80 (YR) Figure 48. Hematocrit values of exposed females plotted against age. Solid line represents mean level of unexposed female population. © EXPOSED MALES > (5 @ UNEXPOSED MALES >i5 3.4 4 70 Le 30 CUMULATIVE HEMATOCRIT 4 HEMATOCRIT UNEXPOSED 45 T so} 4 . T | 32 36 40 44 43 REMATOCRIT 52 Figure 49. Red blood count cumulative percent distribu- Figure 50. Cumulative percent distribution curvesfor hematocrit values in exposed males compared with unexposed males. the basophil andalkaline phosphatase counts are presented in Appendix 4. tain blood elements compared with the unexposed group. Though the meanlevels were only slightly below those of the controls, more pronounced differences were brought out by comparisonofsex and age groups. Thus, it appeared that the exposed male children (age 7 to 15 years) and the exposed older people of both sexes (age > 40) showedlowerlevels, particularly of neutrophils and platelets, than did the other age-sex groups (see Figure 35). It is interesting that these blood tion of exposed males >15 years of age compared with unexposed maies of the same age group. Comments on Hematological Data The 1961 leukocyte and red blood countsremained slightly below the 1959 levels in the population at large, while the platelets were at about the samelevel. Such fluctuations have been noted before and have not been explained. The exposed group continued to show slight depression ofcer-

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