Cell CycleCell ProliferationCell DifferentiationCell DivisionCell Cycle ProteinsCells, CulturedSignal TransductionApoptosisCell Line, TumorCell LineCell Cycle CheckpointsRNA, MessengerTranscription FactorsG1 PhaseGene Expression RegulationStem CellsBromodeoxyuridinePhosphorylationMolecular Sequence DataMitosisTumor Cells, CulturedCell SurvivalImmunohistochemistryBlotting, WesternDNA-Binding ProteinsFlow CytometryGene Expression Regulation, DevelopmentalReverse Transcriptase Polymerase Chain ReactionS PhaseCyclinsMice, Inbred C57BLCyclin-Dependent Kinase Inhibitor p27Time FactorsDown-RegulationCyclin-Dependent Kinase Inhibitor p21Base SequenceTransfectionGene ExpressionMice, KnockoutRNA, Small InterferingCyclin D1Nuclear ProteinsRetinoblastoma ProteinCell MovementGene Expression Regulation, NeoplasticMutationTranscription, GeneticProtein-Serine-Threonine KinasesMice, TransgenicProliferating Cell Nuclear AntigenModels, BiologicalPhenotypeUp-RegulationFibroblastsEpithelial CellsDNATumor Suppressor Protein p53Lymphocyte ActivationGene Expression ProfilingRNA InterferenceProto-Oncogene ProteinsDose-Response Relationship, DrugAmino Acid SequenceCell LineageG2 PhaseG0 PhaseTumor Suppressor ProteinsCell NucleusPromoter Regions, GeneticKi-67 AntigenEmbryonic Stem CellsTrans-ActivatorsG1 Phase Cell Cycle CheckpointsProtein BindingEnzyme InhibitorsEnzyme ActivationCell Growth ProcessesCell Transformation, NeoplasticT-LymphocytesHomeodomain ProteinsCell CountTretinoinCyclin EProto-Oncogene Proteins c-mycGrowth InhibitorsCyclin-Dependent Kinase 2Gene Knockdown TechniquesMenstrual CycleAntineoplastic AgentsDNA ReplicationRepressor ProteinsDNA PrimersThymidineMice, NudeMice, Inbred BALB CCell Culture TechniquesEmbryo, MammalianKeratinocytesNeoplasm ProteinsIn Situ Hybridization