Checkpoint Kinase 2DNA DamageCell Cycle ProteinsGenes, cdcAtaxia Telangiectasia Mutated ProteinsProtein-Serine-Threonine KinasesG2 PhaseProtein KinasesS PhaseM Phase Cell Cycle CheckpointsCell CycleHydroxyureaMitosisDNA ReplicationS Phase Cell Cycle CheckpointsDNA RepairCell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsSaccharomyces cerevisiae ProteinsDNA-Binding ProteinsSpindle ApparatusSchizosaccharomycesSchizosaccharomyces pombe ProteinsKinetochoresNuclear ProteinsPhosphorylationRadiation, IonizingDNA Breaks, Double-StrandedTumor Suppressor ProteinsUltraviolet Rayscdc25 PhosphatasesSaccharomyces cerevisiaePhleomycins1-NaphthylamineMethyl MethanesulfonateGenomic InstabilityMutationReplication Protein AIntracellular Signaling Peptides and ProteinsTumor Suppressor Protein p53G1 PhaseGamma RaysNaphthalimidesCyclin BCDC2 Protein KinaseAtaxia TelangiectasiaChromosome SegregationHeLa CellsDNA, FungalFungal ProteinsCyclin B1CaffeineSignal TransductionNucleic Acid Synthesis InhibitorsXenopus ProteinsRNA, Small InterferingExodeoxyribonucleasesNocodazoleModels, BiologicalDose-Response Relationship, RadiationRadiation ToleranceDNAFibroblastsAurora KinasesChromatinCdc20 ProteinsHistonesCell LineTelomereAphidicolinDNA HelicasesProtein BindingChromosomal Proteins, Non-HistoneRecombination, GeneticCell Line, TumorAdaptor Proteins, Signal TransducingRad51 RecombinaseMeiosisChromosomesCell DivisionCell SurvivalMolecular Sequence DataAnaphaseCarrier ProteinsEndodeoxyribonucleasesApoptosisTelomere-Binding ProteinsRNA InterferenceDNA-Activated Protein KinaseChromosome BreakageReplication OriginAmino Acid SequenceGene Expression Regulation, FungalGenes, FungalCyclin-Dependent Kinase Inhibitor p21Gene DeletionCyclin-Dependent Kinase 2Enzyme ActivationTime FactorsCell Nucleus