Radiation ChimeraChimeraBone Marrow TransplantationBone MarrowMice, Inbred StrainsRadiation DosageRadiation, IonizingThymus GlandBone Marrow CellsH-2 AntigensSpleenRadiation InjuriesT-LymphocytesTransplantation, HomologousMice, Inbred C3HDose-Response Relationship, RadiationMice, Inbred C57BLRadiation ToleranceRadiationMice, Inbred BALB CRadiation ProtectionRadiation MonitoringRadiation OncologyCosmic RadiationRadiation Injuries, ExperimentalRadiation PneumonitisRecombinant Fusion ProteinsGamma RaysNeoplasms, Radiation-InducedBackground RadiationRadiotherapyTransplantation Chimera