Cell CycleCell Cycle ProteinsCheckpoint Kinase 2Cell Cycle CheckpointsMitosisS PhaseG2 PhaseGenes, cdcG1 PhaseDNA DamageM Phase Cell Cycle CheckpointsProtein-Serine-Threonine KinasesG2 Phase Cell Cycle CheckpointsCyclinsCell DivisionDNA ReplicationProtein KinasesSpindle ApparatusCDC2 Protein KinaseNuclear ProteinsPhosphorylationS Phase Cell Cycle CheckpointsCyclin-Dependent Kinase Inhibitor p21ApoptosisDNA-Binding ProteinsAtaxia Telangiectasia Mutated ProteinsTumor Suppressor Protein p53Menstrual CycleCyclin BSaccharomyces cerevisiae ProteinsHydroxyureaCell ProliferationRetinoblastoma Proteincdc25 PhosphatasesCell Line, TumorG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase Inhibitor p27Saccharomyces cerevisiaeMutationTumor Suppressor ProteinsSchizosaccharomycesKinetochoresSignal TransductionCyclin-Dependent Kinase 2HeLa CellsSchizosaccharomyces pombe ProteinsCell LineNocodazoleMolecular Sequence DataG0 PhaseDNA RepairCyclin B1Flow CytometryCyclin ECyclin ACyclin D1Fungal ProteinsInterphaseModels, BiologicalCell NucleusCDC2-CDC28 KinasesUbiquitin-Protein Ligase ComplexesCyclin-Dependent Kinase 4Transcription FactorsCells, CulturedTime FactorsCdc20 ProteinsTumor Cells, CulturedChromosome SegregationDNAAmino Acid SequenceAnaphase-Promoting Complex-CyclosomeCell SurvivalProtein BindingHistonesE2F Transcription FactorsGene Expression RegulationGamma RaysRNA, Small InterferingAnaphaseTranscription, GeneticBlotting, WesternBase SequenceRNA, MessengerFibroblastsEstrous CycleMetaphaseIntracellular Signaling Peptides and ProteinsCell DifferentiationMicrotubule-Associated ProteinsE2F1 Transcription FactorRepressor ProteinsBromodeoxyuridineRadiation, IonizingRNA InterferenceUltraviolet RaysCyclin DDNA, FungalCarrier ProteinsAntineoplastic Agents