Cell CycleCell Cycle ProteinsSpindle ApparatusGenes, cdcCheckpoint Kinase 2DNA DamageMitosisG2 PhaseCell Cycle CheckpointsProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsMutationS PhaseProtein KinasesDNA RepairM Phase Cell Cycle CheckpointsHydroxyureaNuclear ProteinsG2 Phase Cell Cycle CheckpointsDNA-Binding ProteinsMad2 ProteinsG1 PhaseSaccharomyces cerevisiae ProteinsPoint MutationTumor Suppressor Protein p53DNA ReplicationSchizosaccharomycesGamma RaysFungal ProteinsMuscle SpindlesSaccharomyces cerevisiaeSchizosaccharomyces pombe ProteinsTumor Suppressor ProteinsMutation, MissenseChromosomal InstabilityPhosphorylationAtaxia Telangiectasiacdc25 PhosphatasesMolecular Sequence DataGenes, FungalUltraviolet RaysRadiation, IonizingCDC2 Protein KinaseCyclin BCyclinsKinetochoresCyclin-Dependent Kinase Inhibitor p21Cell DivisionNocodazoleMicrotubulesBase SequenceIntracellular Signaling Peptides and ProteinsCell LineApoptosisGenomic InstabilityRadiation ToleranceHeLa CellsCentrosomeMetaphaseGene DeletionSignal TransductionDNA, FungalG1 Phase Cell Cycle CheckpointsAnaphaseCyclin B1Cell Line, TumorModels, BiologicalPhenotypeAmino Acid SequenceS Phase Cell Cycle CheckpointsFibroblastsAneuploidyRepressor ProteinsAllelesChromosome SegregationChromosomes, FungalGenes, p53DNA Breaks, Double-StrandedRetinoblastoma ProteinCell NucleusBRCA1 ProteinDNAProtein BindingCDC28 Protein Kinase, S cerevisiaeChromosomesFrameshift MutationHistonesNeoplasm ProteinsFlow CytometryCyclin-Dependent Kinase 2DNA PrimersTumor Cells, CulturedMicrotubule-Associated ProteinsCell ProliferationCells, CulturedCalcium-Binding ProteinsRNA, Small InterferingCarrier ProteinsCell SurvivalDNA Repair Enzymes