Cell CycleCell DivisionCell Cycle ProteinsCell Cycle CheckpointsMitosisG1 PhaseS PhaseCyclinsG2 PhaseMenstrual CycleCell ProliferationApoptosisCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Retinoblastoma ProteinMutationMolecular Sequence DataDNA ReplicationG2 Phase Cell Cycle CheckpointsCDC2 Protein KinaseAsymmetric Cell DivisionProtein-Serine-Threonine KinasesG0 PhaseInterphaseCell Line, TumorPhosphorylationCell Nucleus DivisionTumor Suppressor Protein p53Cyclin-Dependent Kinase 2G1 Phase Cell Cycle CheckpointsModels, BiologicalCell NucleusGenes, cdcCell LineDNA-Binding ProteinsCyclin BSignal TransductionNuclear ProteinsCyclin ECyclin D1DNA DamageTime FactorsFlow CytometryCyclin ATranscription FactorsCell DifferentiationSpindle ApparatusCells, CulturedSaccharomyces cerevisiaeAmino Acid Sequencecdc25 PhosphatasesCyclin-Dependent Kinase 4Tumor Suppressor ProteinsBase SequenceHeLa CellsCDC2-CDC28 KinasesDNARNA, MessengerSchizosaccharomycesBromodeoxyuridineSaccharomyces cerevisiae ProteinsTranscription, GeneticCytokinesisGene Expression RegulationTumor Cells, CulturedE2F Transcription FactorsCyclin B1Estrous CycleMeiosisCell SurvivalCaulobacter crescentusCyclin DCentrosomeFungal ProteinsProtein KinasesProtein BindingMicrotubule-Associated ProteinsBlotting, WesternPhenotypeMicroscopy, FluorescenceE2F1 Transcription FactorMicrotubulesCitric Acid CycleSchizosaccharomyces pombe ProteinsHistonesCyclin-Dependent Kinase Inhibitor ProteinsFibroblastsRecombinant Fusion ProteinsGene Expression Regulation, DevelopmentalDown-RegulationCarrier ProteinsHydroxyureaTransfectionCyclin D3Gene Expression ProfilingS Phase Cell Cycle CheckpointsRNA InterferenceChromosome SegregationKineticsM Phase Cell Cycle Checkpoints