Cell CycleCell Cycle ProteinsCheckpoint Kinase 2Cell Cycle CheckpointsDNA DamageG2 PhaseGenes, cdcMitosisProtein-Serine-Threonine KinasesS PhaseAtaxia Telangiectasia Mutated ProteinsG2 Phase Cell Cycle CheckpointsG1 PhaseM Phase Cell Cycle CheckpointsProtein KinasesDNA RepairTumor Suppressor Protein p53Spindle ApparatusDNA-Binding ProteinsDNA ReplicationTumor Suppressor ProteinsNuclear ProteinsHydroxyureacdc25 PhosphatasesPhosphorylationCyclinsCDC2 Protein KinaseCyclin-Dependent Kinase Inhibitor p21Cyclin BGamma RaysCell DivisionRadiation, IonizingS Phase Cell Cycle CheckpointsAtaxia TelangiectasiaApoptosisSaccharomyces cerevisiae ProteinsMutationSchizosaccharomycesG1 Phase Cell Cycle CheckpointsNocodazoleSchizosaccharomyces pombe ProteinsSaccharomyces cerevisiaeGenomic InstabilityKinetochoresCyclin B1Cell Line, TumorRadiation ToleranceSignal TransductionHeLa CellsCell LineRetinoblastoma ProteinUltraviolet RaysDNA Breaks, Double-StrandedFungal ProteinsCyclin-Dependent Kinase 2Models, BiologicalMolecular Sequence DataFlow CytometryChromosomal InstabilityFibroblastsCell ProliferationHistonesCell NucleusCyclin EDNATumor Cells, CulturedIntracellular Signaling Peptides and ProteinsCyclin-Dependent Kinase Inhibitor p27Cdc20 ProteinsBRCA1 ProteinCell SurvivalCyclin ACDC2-CDC28 KinasesMethyl MethanesulfonateRNA, Small InterferingAmino Acid SequenceProtein BindingCells, CulturedMetaphaseChromosome SegregationGenes, p53Cyclin D1AphidicolinMenstrual CycleCentrosomeMimosineInterphaseTime FactorsCyclin-Dependent KinasesNucleic Acid Synthesis InhibitorsAnaphaseDNA, FungalUbiquitin-Protein Ligase ComplexesDNA Repair EnzymesCarrier ProteinsAnaphase-Promoting Complex-CyclosomeRepressor ProteinsPolyploidyChromosomal Proteins, Non-HistoneCaffeine