Cell ProliferationCell CycleCell Cycle ProteinsCell Cycle CheckpointsCell DivisionG1 PhaseApoptosisCells, CulturedCell Line, TumorMitosisS PhaseSignal TransductionCyclinsCell DifferentiationCyclin-Dependent Kinase Inhibitor p27Cell LinePhosphorylationCyclin-Dependent Kinase Inhibitor p21Time FactorsG2 PhaseRNA, MessengerFlow CytometryRetinoblastoma ProteinBromodeoxyuridineCyclin D1Menstrual CycleCell SurvivalTumor Cells, CulturedProtein-Serine-Threonine KinasesMolecular Sequence DataTumor Suppressor Protein p53Blotting, WesternG0 PhaseDNA-Binding ProteinsGene Expression RegulationG2 Phase Cell Cycle CheckpointsTranscription FactorsG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 2Proliferating Cell Nuclear AntigenModels, BiologicalNuclear ProteinsCyclin EImmunohistochemistryDNA ReplicationMutationTumor Suppressor ProteinsDown-RegulationCDC2 Protein KinaseFibroblastsReverse Transcriptase Polymerase Chain ReactionDNAGene Expression Regulation, NeoplasticCyclin ARNA, Small InterferingTransfectionMice, Inbred C57BLDose-Response Relationship, DrugCyclin-Dependent Kinase 4Base SequenceCell NucleusDNA DamageInterphaseLymphocyte ActivationCell MovementKi-67 AntigenTranscription, GeneticGene ExpressionGenes, cdcAmino Acid SequenceStem CellsAntineoplastic AgentsCyclin BMice, KnockoutProto-Oncogene ProteinsCDC2-CDC28 KinasesRNA InterferenceHeLa CellsEnzyme InhibitorsGene Expression ProfilingE2F Transcription FactorsUp-RegulationCyclin DThymidineProtein BindingPhenotypeEpithelial CellsMice, Transgeniccdc25 PhosphatasesCell Growth ProcessesT-LymphocytesEnzyme ActivationE2F1 Transcription FactorProto-Oncogene Proteins c-mycCyclin B1Cell Transformation, NeoplasticGene Expression Regulation, DevelopmentalEstrous CycleCell CountPromoter Regions, Genetic