Cell CycleCell Cycle ProteinsS PhaseG1 PhaseDisease ProgressionCell Cycle CheckpointsCyclinsMitosisCyclin-Dependent Kinase 4Cell DivisionCyclin-Dependent Kinase Inhibitor p27G2 PhaseCyclin D1Retinoblastoma ProteinCyclin ECyclin-Dependent Kinase 2G0 PhaseDNA ReplicationProtein-Serine-Threonine KinasesCell ProliferationCyclin ACyclin DCell Line, TumorApoptosisCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent KinasesCDC2-CDC28 KinasesPhosphorylationDNA DamageCell LineDNA-Binding ProteinsMenstrual CycleNuclear ProteinsSignal TransductionBromodeoxyuridineE2F1 Transcription FactorTumor Suppressor ProteinsE2F Transcription FactorsFlow CytometryTime FactorsTranscription FactorsHeLa CellsG2 Phase Cell Cycle CheckpointsMutationMolecular Sequence DataHydroxyureaCells, CulturedRNA, MessengerTumor Cells, CulturedTumor Suppressor Protein p53CDC2 Protein KinaseCell NucleusG1 Phase Cell Cycle CheckpointsDNAGene Expression RegulationRNA, Small InterferingSaccharomyces cerevisiaeProto-Oncogene ProteinsBlotting, WesternTranscription, GeneticProtein BindingProtein KinasesGenes, cdcCyclin BInterphaseSaccharomyces cerevisiae ProteinsFibroblastsTransfectionChromatinEnzyme Inhibitorscdc25 PhosphatasesModels, BiologicalEstrous CycleGene Expression Regulation, NeoplasticCyclin B1Enzyme ActivationCell DifferentiationBase SequenceCell SurvivalAmino Acid SequenceAntineoplastic AgentsDown-RegulationCitric Acid CycleGene Expression ProfilingS Phase Cell Cycle CheckpointsCyclin D3ImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionHistonesProliferating Cell Nuclear AntigenCyclin-Dependent Kinase Inhibitor ProteinsPromoter Regions, GeneticFungal ProteinsSchizosaccharomycesCyclin-Dependent Kinase Inhibitor p16Microtubule-Associated ProteinsRNA InterferenceGene ExpressionM Phase Cell Cycle CheckpointsCell Transformation, Neoplastic