Cell CycleCell Cycle ProteinsCheckpoint Kinase 2DNA DamageG2 PhaseGenes, cdcAtaxia Telangiectasia Mutated ProteinsCell Cycle CheckpointsProtein-Serine-Threonine KinasesMitosisS PhaseAtaxia TelangiectasiaProtein KinasesHydroxyureaTumor Suppressor ProteinsG2 Phase Cell Cycle CheckpointsRadiation, IonizingDNA-Binding ProteinsChromosomal InstabilityNuclear ProteinsG1 PhaseSpindle ApparatusRadiation ToleranceDNA RepairDNA ReplicationPhosphorylationTumor Suppressor Protein p53MutationSaccharomyces cerevisiae ProteinsSchizosaccharomycesM Phase Cell Cycle CheckpointsGamma Rayscdc25 PhosphatasesSaccharomyces cerevisiaeCyclinsCyclin-Dependent Kinase Inhibitor p21CDC2 Protein KinaseCyclin BCell DivisionApoptosisGenomic InstabilityG1 Phase Cell Cycle CheckpointsCyclin B1DNA, FungalSignal TransductionS Phase Cell Cycle CheckpointsUltraviolet RaysCell LineCell Line, TumorNocodazoleSchizosaccharomyces pombe ProteinsHeLa CellsDNA Breaks, Double-StrandedFibroblastsRetinoblastoma ProteinMolecular Sequence DataModels, BiologicalBRCA1 ProteinFungal ProteinsFlow CytometryCyclin-Dependent Kinase 2HistonesGenes, p53KinetochoresCell ProliferationCell NucleusDNATumor Cells, CulturedCyclin EIntracellular Signaling Peptides and ProteinsCell SurvivalDNA Repair EnzymesMethyl MethanesulfonateAmino Acid SequenceMimosineCells, CulturedCDC2-CDC28 KinasesRNA, Small InterferingCyclin-Dependent KinasesProtein BindingCaffeineCyclin AAphidicolinCentrosomePhenotypeNucleic Acid Synthesis InhibitorsPolyploidyBase SequenceMetaphaseCyclin-Dependent Kinase Inhibitor p27Time FactorsDose-Response Relationship, RadiationThioguanineCarrier ProteinsBlastulaHCT116 CellsCyclin D1Gene DeletionAntineoplastic AgentsChromosome Breakage