Cell CycleCell ProliferationCell Cycle ProteinsCell DivisionApoptosisCell Line, TumorSignal TransductionCells, CulturedCell Cycle CheckpointsCell LineRNA, MessengerG1 PhaseCell DifferentiationPhosphorylationBlotting, WesternMitosisS PhaseMolecular Sequence DataTransfectionCyclinsImmunohistochemistryCell SurvivalTumor Cells, CulturedGene Expression RegulationGene Expression Regulation, NeoplasticTranscription FactorsBromodeoxyuridineGene ExpressionCyclin D1Reverse Transcriptase Polymerase Chain ReactionCyclin-Dependent Kinase Inhibitor p27RNA, Small InterferingDNA-Binding ProteinsDown-RegulationCyclin-Dependent Kinase Inhibitor p21Mice, TransgenicProtein-Serine-Threonine KinasesFlow CytometryMutationTumor Suppressor Protein p53Up-RegulationTime FactorsNuclear ProteinsBase SequenceCell MovementMice, Inbred C57BLRetinoblastoma ProteinProliferating Cell Nuclear AntigenRNA InterferenceAmino Acid SequenceG2 PhaseFibroblastsProto-Oncogene ProteinsTranscription, GeneticTumor Suppressor ProteinsModels, BiologicalProtein BindingMice, KnockoutKi-67 AntigenDose-Response Relationship, DrugPhenotypePromoter Regions, GeneticDNACell NucleusCell Growth ProcessesG0 PhaseEpithelial CellsCyclin EEnzyme ActivationG1 Phase Cell Cycle CheckpointsMice, NudeCell Transformation, NeoplasticEnzyme InhibitorsHeLa CellsAntineoplastic AgentsCyclin-Dependent Kinase 2Gene Knockdown TechniquesGene Expression ProfilingProto-Oncogene Proteins c-aktLymphocyte ActivationGene Expression Regulation, DevelopmentalProto-Oncogene Proteins c-mycMenstrual CycleBreast NeoplasmsStem CellsCyclin ADNA ReplicationCarrier ProteinsNeoplasm ProteinsG2 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 4Recombinant ProteinsThymidineDNA PrimersRecombinant Fusion ProteinsTrans-ActivatorsDNA DamageT-LymphocytesCDC2 Protein KinaseRepressor Proteins