Cell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2DNA DamageG2 PhaseMitosisProtein-Serine-Threonine KinasesCell Cycle CheckpointsMad2 ProteinsSpindle ApparatusM Phase Cell Cycle CheckpointsAtaxia Telangiectasia Mutated ProteinsProtein KinasesS PhaseDNA RepairHydroxyureaNuclear ProteinsG2 Phase Cell Cycle CheckpointsKinetochoresSaccharomyces cerevisiae ProteinsSchizosaccharomyces pombe ProteinsDNA ReplicationSchizosaccharomycesDNA-Binding ProteinsG1 PhaseFungal ProteinsSaccharomyces cerevisiaeTumor Suppressor Protein p53Gamma RaysMutationTumor Suppressor ProteinsPhosphorylationNocodazoleCdc20 ProteinsChromosomal InstabilityRadiation, IonizingCyclin BCDC2 Protein Kinasecdc25 PhosphatasesUltraviolet RaysIntracellular Signaling Peptides and ProteinsGenomic InstabilityAtaxia TelangiectasiaCyclin-Dependent Kinase Inhibitor p21HeLa CellsGenes, FungalS Phase Cell Cycle CheckpointsDNA, FungalCyclinsChromosome SegregationMetaphaseCyclin B1Calcium-Binding ProteinsMolecular Sequence DataCell DivisionDNA Breaks, Double-StrandedApoptosisRepressor ProteinsSignal TransductionRadiation ToleranceAneuploidyG1 Phase Cell Cycle CheckpointsCell Line, TumorCell LineModels, BiologicalMethyl MethanesulfonateHistonesUbiquitin-Protein Ligase ComplexesAnaphase-Promoting Complex-CyclosomeAnaphaseBRCA1 ProteinProtein BindingGene DeletionChromosomal Proteins, Non-HistoneFibroblastsRNA, Small InterferingBase SequenceFlow CytometryCell NucleusMicrotubulesAmino Acid SequenceRetinoblastoma ProteinCarrier ProteinsDNAPrometaphaseAurora KinasesCDC28 Protein Kinase, S cerevisiaeCentrosomeChromosomes, FungalCyclin-Dependent Kinase 2PhenotypeCell SurvivalNeoplasm ProteinsTumor Cells, CulturedCell ProliferationChromosomesGenes, p53Replication Protein AChromatin