52 EFFECTS OF IONIZING RADIATION Table 4.6.—Group I Rongelap Mean Blood Counts at Time of Maximum Depression Table 4.6.—Group I Rongelap Mean Blood Counts at Time of Peak Depression—Continued AGE Less THAN 5 AGE GREATER THAN 15 |BCL Peon| Nunes| Verres FROM DAY (AVERAGE (AVERAGE (AVERAGE CasE No. si'70 5) PONDAY MaouDAY PRowDay 2 3 5 17 19 2) 7220 7320 5620 6230 5650 4750 110 155 115 105 115 85 2870 2770 2570 3350 3070 2670 23 7150 195 4100 2800 5450 5600 95 85 2600 1670 2650 3570 54 4750 145 2620 5500 65 69 6050 4770 15 20 24 26 35 36 39 47 61 67 72 75 3920 5020 5620 6020 5100 4720 4720 7220 5600 5120 4100 4200 80 105 115 2520 PLATELETS NEUTRO- LYMPHO- (AVERAGE (AVERAGE (AVERAGE (AVERAGE 52 55 56 57 58 60 62 63 64 66 68 71 73 74 78 79 80 82 5620 4400 6170 5020 4750 6970 8300 4270 5600 6100 4600 7950 3970 9900 5400 7800 5670 5250 160 135 125 55 80 160 110 65 70 145 120 105 60 155 95 70 100 130 2970 1450 3520 2020 2600 4050 5170 2550 3220 2820 2400 4950 2630 7250 3350 5120 2920 2620 2450 2720 2550 2700 1850 2470 2820 1520 2050 3120 2020 2700 1260 2550 1950 2500 2520 2470 4050 4200 2650 2650 2400 1950 32 33 42 W.B.C. CasE No. 2920 1950 2520 1420 2400 3170 1470 3020 3450 3470 2700 2520 2900 4720 2500 2970 1800 2320 2320 1950 1970 2320 2150 2470 1550 2250 2970 1920 1970 1720 Age 5 to 15 5750 150 2800 18 22 25 27 30 34 37 40 46 49 | 250 6420 §220 5470 4550 3120 4670 4050 4570 130 195 125 105 85 150 55 55 2650 2520 2700 2770 1570 3270 2370 2770 3550 2520 2420 1570 1350 1270 1520 1700 4470 6250 6620 5700 5900 5970 5600 4620 6620 y 136 110 110 85 125 130 140 135 180 2500 4050 3600 3920 3650 3120 2450 2350 4050 1900 2120 2850 1600 2350 2570 2870 2100 2220 6100 45 4320 response in the two groups is not apparent. 2870 Age greater than 15 4 7 9 10 11 12 13 14 entirely by changes in the total neutrophile count. Group III differed since the changes in total leukocyte count were reflected almost equally in the lymphocyte and neutrophile count. The significance of this difference in 1650 AMERICAN CONTROLS ~ | PLATELETS «10° 3 8 76 200 120 195 145 140 130 165 120 105 115 185 110 397051) Mad| 970si) 3070 51) GROUP [I Platelets 4t OG 20 25 30.38 40. POST EXPOSURE DAY 45 so 55 60 Fiaure 4.6.—-Serial platelet counts in exposed Americans (Group IIT), The platelet. count (Fig. 4.6) were not markedly depressed when the initial counts were taken during the 3d week. At the end of the 3d week, however, the platelet count began to