DNA DamageDNA RepairUltraviolet RaysDNA Breaks, Double-StrandedDNA Repair EnzymesDNA End-Joining RepairDNA-Binding ProteinsComet AssayDNACell Cycle ProteinsGamma RaysCell CycleDNA ReplicationMutationDNA Breaks, Single-StrandedMethyl MethanesulfonateAtaxia Telangiectasia Mutated ProteinsCell LineNuclear ProteinsRecombination, GeneticAntigens, NuclearMutagensPyrimidine DimersApoptosisRadiation ToleranceRad51 RecombinaseDose-Response Relationship, RadiationDNA LigasesDNA HelicasesCell SurvivalCells, CulturedSaccharomyces cerevisiaeModels, BiologicalEndodeoxyribonucleasesDeoxyguanosineMolecular Sequence DataDNA-Activated Protein KinaseDeoxyribodipyrimidine Photo-LyaseSignal TransductionTumor Suppressor Protein p53Checkpoint Kinase 2DNA Polymerase betaBase SequenceProtein-Serine-Threonine KinasesRadiation, IonizingSaccharomyces cerevisiae ProteinsOxidative StressFibroblastsTime FactorsCell Line, TumorHeLa CellsTumor Suppressor ProteinsDNA Mismatch RepairGenomic InstabilityEscherichia coliHistonesDNA GlycosylasesPhosphorylationMitosisRecombinational DNA RepairDNA-Directed DNA PolymeraseDNA AdductsG2 PhaseCell NucleusEscherichia coli ProteinsCell DivisionCell ProliferationCell DifferentiationMice, Inbred C57BLPoly(ADP-ribose) PolymerasesCell MovementDNA BreaksStem CellsFlow CytometryTranscription FactorsMice, KnockoutHydrogen PeroxideEndonucleasesReactive Oxygen SpeciesXeroderma Pigmentosum Group A ProteinTranscription, GeneticAlkylating Agents