Cell CycleCell Cycle ProteinsCell Cycle CheckpointsMolecular Sequence DataG1 PhaseCell DivisionMitosisCell LineApoptosisS PhaseAmino Acid SequenceCell Line, TumorCyclinsSignal TransductionCell ProliferationRNA, MessengerPhosphorylationBase SequenceMutationTransfectionCells, CulturedDNA-Binding ProteinsGene ExpressionTranscription FactorsG2 PhaseNuclear ProteinsGene Expression RegulationTumor Suppressor Protein p53Protein-Serine-Threonine KinasesBlotting, WesternCyclin-Dependent Kinase Inhibitor p21Protein BindingTumor Cells, CulturedCyclin-Dependent Kinase Inhibitor p27Menstrual CycleRetinoblastoma ProteinHeLa CellsCyclin D1Transcription, GeneticSaccharomyces cerevisiaeCell NucleusGene Expression Regulation, NeoplasticCarrier ProteinsMice, TransgenicMembrane ProteinsCell DifferentiationModels, BiologicalG2 Phase Cell Cycle CheckpointsTime FactorsImmunohistochemistryKineticsPromoter Regions, GeneticSaccharomyces cerevisiae ProteinsRecombinant Fusion ProteinsInterphaseCDC2 Protein KinaseRNA, Small InterferingUp-RegulationG0 PhaseCyclin ECloning, MolecularFlow CytometryReverse Transcriptase Polymerase Chain ReactionDown-RegulationCyclin-Dependent Kinase 2G1 Phase Cell Cycle CheckpointsFungal ProteinsFluorescent Antibody TechniqueTumor Suppressor ProteinsFibroblastsDNAProto-Oncogene ProteinsDNA DamagePhenotypeDNA ReplicationMicrotubulesCell SurvivalCyclin AMicrotubule-Associated ProteinsCyclin-Dependent Kinase 4RNA InterferenceSequence Homology, Amino AcidRecombinant ProteinsCyclin BGenes, cdcDNA PrimersMicroscopy, FluorescenceEnzyme ActivationBinding SitesProtein KinasesCDC2-CDC28 KinasesProteinsMicroscopy, ElectronGene Expression Profilingcdc25 PhosphatasesE2F Transcription FactorsEnzyme InhibitorsActinsCytoplasmImmunoblotting