Cell CycleCell Cycle ProteinsTumor Suppressor Protein p53Cell Cycle CheckpointsG2 PhaseCheckpoint Kinase 2DNA DamageGenes, cdcMitosisS PhaseAtaxia Telangiectasia Mutated ProteinsProtein-Serine-Threonine KinasesGenes, p53G1 PhaseG2 Phase Cell Cycle CheckpointsMutationCyclin-Dependent Kinase Inhibitor p21CyclinsNuclear ProteinsDNA-Binding ProteinsTumor Suppressor ProteinsApoptosisDNA RepairProtein KinasesPhosphorylationCell DivisionCell Line, TumorMolecular Sequence DataTumor Cells, CulturedDNA ReplicationProto-Oncogene Proteins c-mdm2cdc25 PhosphatasesM Phase Cell Cycle CheckpointsCDC2 Protein KinaseCell LineGamma RaysNotochordHydroxyureaCyclin BAtaxia TelangiectasiaRadiation, IonizingSpindle ApparatusSignal TransductionG1 Phase Cell Cycle CheckpointsBase SequenceProtein BindingDNATransfectionRetinoblastoma ProteinRadiation ToleranceAmino Acid SequenceSaccharomyces cerevisiae ProteinsCyclin B1Saccharomyces cerevisiaeCell SurvivalGenomic InstabilitySchizosaccharomycesHeLa CellsS Phase Cell Cycle CheckpointsNeural TubeProto-Oncogene ProteinsCell ProliferationGene Expression Regulation, NeoplasticEmbryonic InductionCyclin-Dependent Kinase 2Models, BiologicalUltraviolet RaysFlow CytometryNocodazoleTranscription, GeneticFibroblastsSchizosaccharomyces pombe ProteinsBlotting, WesternTranscription FactorsPromoter Regions, GeneticFungal ProteinsRNA, MessengerCyclin ECell NucleusDNA Breaks, Double-StrandedCyclin-Dependent Kinase Inhibitor p27Neoplasm ProteinsHistonesCells, CulturedHedgehog ProteinsTime FactorsChromosomal InstabilityCDC2-CDC28 KinasesGrowth PlateCyclin ACell DifferentiationMenstrual CycleRecombinant Fusion ProteinsBRCA1 ProteinCyclin D1Gene Expression Regulation, DevelopmentalMimosineProteinsHepatocyte Nuclear Factor 3-betaRNA, Small Interfering