Dose-Response Relationship, DrugTime FactorsRadiation DosageRadiation, IonizingDose-Response Relationship, RadiationRadiation InjuriesRadiation ToleranceRadiationRadiation MonitoringRadiation ProtectionRadiometryDNA RepairGamma RaysNeoplasms, Radiation-InducedDNA DamageRadiation OncologyOxytropisRadiotherapy DosageCosmic RadiationRadiation Injuries, Experimental