DNA DamageRadiation DosageRadiation, IonizingRadiation InjuriesDose-Response Relationship, RadiationRadiation ToleranceDNA RepairComet AssayRadiationUltraviolet RaysRadiation ProtectionRadiation MonitoringGamma RaysAtaxia Telangiectasia Mutated ProteinsCell Cycle ProteinsRadiation OncologyTumor Suppressor Protein p53Cosmic RadiationRadiation Injuries, ExperimentalDeoxyguanosineCheckpoint Kinase 2DNA-Binding ProteinsDNA Breaks, Double-StrandedProtein-Serine-Threonine KinasesCell CycleApoptosisNeoplasms, Radiation-InducedOxidative StressTumor Suppressor ProteinsRadiation PneumonitisDNARadiotherapyX-RaysBackground RadiationRadiation-Protective AgentsRadiation-Sensitizing AgentsCell SurvivalMethyl MethanesulfonateNuclear ProteinsCell Line, TumorMutagensG2 PhaseGenomic InstabilityHistonesRadiometryRadiotherapy DosageMutationRadiation EffectsDNA ReplicationPhosphorylationLinear Energy TransferTime FactorsCell LineCombined Modality TherapyReactive Oxygen SpeciesSignal TransductionHydrogen PeroxideDNA BreaksDNA AdductsDNA Repair EnzymesPoly(ADP-ribose) PolymerasesProtein KinasesFibroblastsRad51 RecombinaseCell Cycle CheckpointsAcute Radiation SyndromeCells, CulturedHeLa CellsDNA Breaks, Single-StrandedMicronucleus TestsGenes, cdcCobalt RadioisotopesDNA-Activated Protein KinaseS PhaseRadiobiologyDNA GlycosylasesSaccharomyces cerevisiae ProteinsModels, BiologicalBRCA1 ProteinRadioactive Hazard ReleaseMitosisCell AgingCell NucleusAntioxidantsNeoplasmsRadiotherapy, ConformalHydroxyureaAntineoplastic AgentsRadiation Hybrid MappingMolecular Sequence DataG2 Phase Cell Cycle CheckpointsDose FractionationSaccharomyces cerevisiaeAlkylating AgentsPyrimidine DimersIntracellular Signaling Peptides and ProteinsAtaxia TelangiectasiaCell DeathInfrared RaysChromatin