Cell CycleGenes, cdcCell Cycle ProteinsG2 PhaseDNA DamageCheckpoint Kinase 2Cell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesS PhaseG1 PhaseAtaxia Telangiectasia Mutated ProteinsProtein KinasesCyclinsG2 Phase Cell Cycle CheckpointsDNA RepairDNA-Binding ProteinsHydroxyureaDNA ReplicationNuclear ProteinsTumor Suppressor Protein p53Spindle ApparatusM Phase Cell Cycle Checkpointscdc25 PhosphatasesMutationSaccharomyces cerevisiae ProteinsCyclin-Dependent Kinase Inhibitor p21Cell DivisionCDC2 Protein KinaseSaccharomyces cerevisiaeFungal ProteinsGamma RaysTumor Suppressor ProteinsSchizosaccharomycesMolecular Sequence DataMad2 ProteinsGenes, FungalPhosphorylationSchizosaccharomyces pombe ProteinsApoptosisCell ProliferationCell Line, TumorRetinoblastoma ProteinCyclin BAtaxia TelangiectasiaCell LineRadiation, IonizingBase SequenceUltraviolet RaysChromosomal InstabilitySensitivity and SpecificitySignal TransductionCyclin AG1 Phase Cell Cycle CheckpointsCyclin EHeLa CellsGene Expression RegulationRepressor ProteinsRadiation ToleranceModels, BiologicalIntracellular Signaling Peptides and ProteinsGene Expression ProfilingTranscription, GeneticTranscription FactorsCyclin B1Genomic InstabilityHistonesCyclin-Dependent KinasesGene Expression Regulation, NeoplasticCyclin D1S Phase Cell Cycle CheckpointsAmino Acid SequenceTumor Cells, CulturedRNA, MessengerDNACells, CulturedCyclin-Dependent Kinase 2DNA, FungalFlow CytometryPhenotypeNocodazoleFibroblastsPromoter Regions, GeneticProtein BindingTime FactorsCyclin B2E2F Transcription FactorsOligonucleotide Array Sequence AnalysisGene DeletionDNA Breaks, Double-StrandedCyclin-Dependent Kinase Inhibitor p27Cell NucleusCDC28 Protein Kinase, S cerevisiaeCell SurvivalCDC2-CDC28 KinasesMenstrual CycleAneuploidyBRCA1 ProteinRNA, Small InterferingGenes, p53