scat a ie mitSnaheni'tbaier 35 ously, this may be related to fallout exposure of the eyes. There were also several cases of corneal pig- Table 18 Sr** in Marshallese 24-hr Urine Samples, April 1962 No. of Group Age, subyr jects Exposed Male 1-15 >15 Female 1-15 >15 Total 1-15 >15 3 7 2 8 5 15 Nonexposed Male 1-15 >15 Female 1-15 >15 Total 1-15 >15 Total All All 1-15 >15 Sr, pc/l Ca, mg/i} Sr®, pC/gCa 9.33+1.70* 52414 9.0641.11 175426 9.60+2.30 25411 15.89%2.50 104412 9.4441.18 41411 12.70+1.66 137416 189418 53% 5 426+96 165+26 284466 113420 1 4 28.60+0 8.8842.46 140+ 0 129%11 204+ 0 66+14 7 1 11 10.24+3.07 28.60+0 9.7542.07 100449 140+ 0 110431 143428 204+ 0 115421 6 26 12.6343.34 11.4541.30 42+ 9 126416 270455 L114+14 — —_—— —- —_— *Standard error of estimate. Routine physical examinations of adults revealed that the slight differences in incidence of various diseases in the exposed group compared with the control group could likely be explained by the somewhat greater number of older people in the exposed group. An ophthalmological survey revealed a slight increase in the incidence of pterygia and pinguec- ulae in the exposed group. As reported previ- mentation which may have been related to fallout exposure. There was no evidence in the exposed people of retinal burns which might have resulted from observation of the fireball at the time of the accident in 1954. A cancer detection survey was done which in- cluded, in addition to thorough physical examinations, pelvic examinations in mature women with Papanicolaou staining of smears, rectal examinations in adults, and hematological studies for leukemia detection, which included the determina- tion of alkaline phosphatase levels of leukocytes and basophil counts of 4000 white cells. No cases of malignancy or leukemia were detected. Pediatric examinations revealed no marked differences in abnormalities between exposed and unexposed children and no diseases that could be related to radiation effects. Growth and develop- ment studies, as previously reported, showed that the boys exposed at an early age (<6 yr and partic- ularly 12 to 18 months) were slightly shorter in stature and weighedslightly less than the unexposed children of comparable age. No such differences were noted in the exposed compared with the unexposedgirls. Skeletal age determined by wrist roentgenography showed that both the boys and the girls in the exposed group were slightly retarded, the boys showing the greater deficit. The greatest retardation was noted in 4 boys who had been 16 to 17 months old at exposure. Male chil- dren (but not female) born of exposed parents (after the fallout) tended to be smaller in stature at all ages than children of unexposed parents. Table 19 Sr® Analyses of Bone and Crab Samples g 878 902 1165 705 1.48 2.60 111 136 209 99 Bone Rib Vertebra Crab Sr, dis/min Ash , Original net wt., g % Per total sample 16.4+0.6* 33.8+0.0 12.7 15.1 17.9 14.0 Per g ash 11.1%0.4 13.0+0.3 1462 +5 964 +4 850 +4 1518 +6 *The error term accompanying each result is the Poisson error of counting. Ca, % inash 36.6 36.0 50.0 40.0 34.4 49.6 Sr®°, pC/gCa 13.7+0.5 16.3+0.4 1317 +4 1086 +4 1113 +5 1378 +5

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