laboratory animals that is preceded by hyper-excitability, ataxia, respiratory distress, and intermittent stupor. this syndrome are uniformly fatal. This syndrome has been observed in a few casualties described by Hubner et al. (2), were to survive the CNS syndrome, ‘ - Doses capable of producing If an occasional person the individual has yet to experience c the > Gastrointestinal syndrome (GIS). laboratory animals th that is preceded by hyper-excitability, respiratory distress, and intermittent stupor. this syndrome are uniformly fatal. ataxia, th Doses capable of producing Ja; This syndrome has been observed in a few casualties described by Hubner et al. (2). hig If an occasional person are were to survive the CNS syndrome, the individual has yet to experience the hav Castrointestinal syndrome (G1S}), tts and The Gastrointestinal Syndrome The GIS, when produced by doses in excess of 1500 rad, will be fatal q Radi within 3-9 days in laboratory animals and probably this also applies to human beings. variations. The range in survival results from species and strain . It is named the GIS syndrome because of the marked nausea, vomiting, diarrhea, and denudation of the small bowel mucosa. The severe’ and persistent GIS is a uniformly fatal syndrome in most laboratory animals, It was observed in Japan and described by Oughtersen and Warren (1), and in some accidents by Hubner et al. (2). (3), have prolonged and plasma. In dogs, Conard et al. sg life by intensive administration of intravenous fluids It is of interest that Nagasaki, The Hemopoietic Syndrome The HS is not necessarily fatal. It is a clinical picture that seen in the lethal range for all mammals including man. 7 ates, So. 3 The lethali the sequelae of bone marrow ~94-. wre es ae wean Pa fd i levels reported represent the LDeg for a (1,1 Prod e@ sury{