Intestine, SmallRadiation InjuriesRadiation Injuries, ExperimentalIntestinal MucosaTiliaEpitheliumJejunumRadiation-Protective AgentsIntestinesRadiation DosageCaco-2 CellsAcute Radiation SyndromeFatty Acid-Binding ProteinsEpithelial CellsIleumMicrovilliDose-Response Relationship, RadiationRadiation ProtectionRadiation, IonizingIntestinal AbsorptionRadiation ToleranceRadioactive Hazard ReleaseRadiotherapyMass Casualty IncidentsCell DifferentiationWounds and InjuriesWhole-Body IrradiationPlacental ExtractsRadiation PneumonitisIntestinal DiseasesSurge CapacityGamma RaysRadiodermatitisEnterocytesBrain InjuriesRadiometryRadiationFluoroscopyMice, Inbred C57BLX-RaysRadiotherapy DosageRadiation MonitoringTime FactorsAthletic InjuriesSpinal Cord InjuriesGastrointestinal TractPaneth CellsReperfusion InjuryApoptosisColonIntestinal NeoplasmsCell SurvivalStem CellsRats, Sprague-DawleyEpithelium, CornealNecrosisBrain NeoplasmsRadiation OncologyImmunohistochemistrySkinInjury Severity ScoreLung InjuryLeg InjuriesGoblet CellsMice, TransgenicEye InjuriesSignal TransductionCosmic RadiationMice, KnockoutTight JunctionsEnteroendocrine CellsEnterocolitis, NecrotizingRNA, MessengerDisease Models, AnimalNeoplasm Recurrence, LocalDuodenumSeminiferous EpitheliumCells, CulturedAcute Lung InjuryTranscytosisNeoplasms, Radiation-InducedRadiopharmaceuticalsCell LineNeck InjuriesHT29 CellsBackground RadiationCell ProliferationNeoplasmsEnteritisGene Expression RegulationRetinal Pigment EpitheliumReverse Transcriptase Polymerase Chain ReactionIntestine, LargeFluorodeoxyglucose F18Abdominal InjuriesAcute Kidney InjuryMicroscopy, ElectronArm InjuriesImmunity, MucosalBlast Injuries