Cell CycleSpindle ApparatusCell Cycle ProteinsCheckpoint Kinase 2MitosisGenes, cdcKinetochoresCell Cycle CheckpointsDNA DamageProtein-Serine-Threonine KinasesG2 PhaseM Phase Cell Cycle CheckpointsMad2 ProteinsAtaxia Telangiectasia Mutated ProteinsNocodazoleProtein KinasesS PhaseCdc20 ProteinsG2 Phase Cell Cycle CheckpointsNuclear ProteinsChromosome SegregationAnaphaseMetaphaseG1 PhaseDNA RepairSaccharomyces cerevisiae ProteinsMicrotubulesTumor Suppressor Protein p53Aurora KinasesCyclin BDNA-Binding ProteinsPhosphorylationDNA ReplicationSchizosaccharomycesSchizosaccharomyces pombe ProteinsTumor Suppressor ProteinsHydroxyureaHeLa CellsCDC2 Protein KinaseChromosomal InstabilitySaccharomyces cerevisiaeMutationMuscle Spindlescdc25 PhosphatasesUbiquitin-Protein Ligase ComplexesAnaphase-Promoting Complex-CyclosomeGamma RaysFungal ProteinsRadiation, IonizingCentrosomeAtaxia TelangiectasiaGenomic InstabilityCalcium-Binding ProteinsCyclin B1Cell DivisionAurora Kinase BS Phase Cell Cycle CheckpointsCyclinsChromosomal Proteins, Non-HistoneCyclin-Dependent Kinase Inhibitor p21ApoptosisSignal TransductionChromosomesMicrotubule-Associated ProteinsModels, BiologicalRepressor ProteinsRadiation TolerancePrometaphaseCell LineCell Line, TumorMolecular Sequence DataG1 Phase Cell Cycle CheckpointsUltraviolet RaysDNA Breaks, Double-StrandedRNA, Small InterferingMeiosisProtein BindingIntracellular Signaling Peptides and ProteinsCell NucleusCarrier ProteinsFibroblastsRNA InterferenceHistonesAmino Acid SequenceCentromereFlow CytometryAneuploidyChromatidsPolyploidyRetinoblastoma ProteinSaccharomycetalesBRCA1 ProteinMethyl MethanesulfonateHCT116 CellsMicroscopy, FluorescenceDNACyclin-Dependent Kinase 2Cell Nucleus DivisionCyclin-Dependent KinasesTumor Cells, Cultured