HEMATOLOGIC OBSERVATIONS 4.34 ° (LEUKOCYTES, NEUTROPHILES AND LYMPHOCYTES 110° & 6 nN cd terminations were carried out on these people. In the greater than 5 age group the total white blood cell and neutrophile counts were depressed slightly below control values during the Ist and 2d weeks (Table 4.4). The lymphocyte counts were below control levels consistently, and the total white count equal to the control value obtained on day 29 was due to a neutrophilic leukocytosis. Platelet counts on the 29th day were significantly lower than on the 19th day and, except for the older age males, were lower than control values, The 29th day coincides with the time of maximum depression for the more heavily exposed groups. 48 POST EXPOSURE Oar Ficure 4.5—Serial total leukocyte, neutrophile and lymphocyte count in exposed Americans (Group IIT). Hematological Findings, Group III (Americans) values thereafter in the course of the study. The lymphocyte counts fell to below control levels in the first few days, and remained at a level approximately 75 percent of the control value throughout most of the remainder of the observation period. In Groups I and IT the fluctuations in the total leukocyte count were accounted for almost The neutrophile count in general reflected the time course of the total leukocyte count (Fig. 4.5). Neutrophiles accounted almost entirely for the marked rise in total count on postexposure day one, and the values for absolute neutrophile count. fluctuated near the contro} Table 4.5.—Group III Americans Mean Blood Count by Day P. E. Dar NEUTRO; riTLEs Wa do | LywPrnooe im 9.6 6. 6 6.2 61 4.3 40 Mle. eee eee eee eee 62, 39 6.3 122s eee eee eee 6.0 16... eee ee eee 8.1 i C 1: 23__..-.-------------- ee 28_ 22 e eee SF 392 eee 43.00 eee ee 470 eee 6. 1 6.1 6.7 Kwaj-American Controls... 7.8 )' BT | 2b) 47 | 29 4.2 41 21 25 3.8 4.4 7.8 | |) 21 2.0 | 27 | | | 46 4.1 22 | 0.1 19 2.0 | | Le. | 1.8 | o3 | 4-2 1.3 | | wn. woeeee weeeee | 22 | 22.0 17.9 144 16. L | } | 22 15 17 1.7 | | 07 160 20 44 21 L& 4 1.4 | | 20.1 218 2.2 | 188 | 24 | 3.1 ! 23. 8 | 2.6 | it 03 25 | | 20. 2 1.6 068 0.4 2.8 | 24 2.7 29 3.1 Eosinorattgs we enee lle. LLL 22]... 21 3.2 | Mowocyrss | _ 3.3 | 210! 20 9 | 4.1 6.8 7.6 5.7 ' 4.8 6.7 7.2 SL. e eee | 38 37 3.8 7.9 P“to -— be eee eee 8.02222 eee eee a 10_--- 0 ---- eee | 2.7 21 22 1.5 2.0 1.5 1.7 27