Acute Radiation SyndromeRadioactive Hazard ReleaseRadiation Injuries, ExperimentalRadiation InjuriesWhole-Body IrradiationRadiation-Protective AgentsRadiation DosageLethal Dose 50Dose-Response Relationship, RadiationPrecursor Cell Lymphoblastic Leukemia-LymphomaRadiodermatitisSyndromeRadiation Pneumonitis