i wee ae! ee Nk me many soldiers had nausea and vomiting, recovered, eae te eS Fe Fame 3 we cepa pH te Le Aa wet pactimneeaAYE aes felt well, returned to duty to later develop purpura, epilation, oral cutaneous lesions, and then cied of infection. This is well-docuriented by Gughtersen and Warren (1). Despite conditions the chaotic that existed Kikuchi and Yakisaka (19) indicates granulocytes in individuals that in Hiroshima, there was more that could be assfguned to the data of rapid decrease of the Survival Improbable and Survival Possible as compared to the Survival Probable group. Survival Probable: not have had This group consists of individuals who may or may transient nausea and vomiting on the day of exposure, In this group, characterized by the Marshallese (6), there is no further evidence of effects of exposure except the hematologic changes that can be detected by serial studies of the blood with particular reference lymphocytes and platelets. within 4€ hours, and show exposure. to granulocytes, The lymphocytes may reach low levels early, little evidence of recovery for many months after The granulucytes may show some depression during the second and third week. However, considerable variation is encountered. _in the granulocytes during A late fall the 6th or 7th week after exposure may occur. . Platelet counts reach the lowest levels at approxmately the 30th day at the time when maxinum bleeding was observed in the Japanese who were exposed at i, Hiroshima and Nagasaki. " Marshallese exposed The lowest platelet counts were also seen in the to fallout radiation around 30 days after exposure. In B this group individuals with neutrophil counts below 1000/1 may be completely asymptomatic. Likewise, ihdividuals with platelet counts of 75,000/u1 ox less may show no external signs of bleeding. defenses against infection are individuals with lowered by Lven though the this sublethal dose of radiation, these severe degrees of hematologic depression may not It is generally believed that premature administration Effects of a Single Dose of Gamma Radiation Analysis of a Possible Human LDc, > In the first place, in all reality, , the mortality response of tan on Tadiation is not known with any degree of precision. .the LDsg in the classic pharmacologic sense; that is, One should think the mortality