Intercellular JunctionsAdherens JunctionsCell CycleCadherinsCell DifferentiationCell Cycle ProteinsGap JunctionsTight JunctionsCell DivisionCell Cycle CheckpointsCells, CulturedNeuromuscular JunctionCell LineCell ProliferationSignal TransductionG1 PhaseMolecular Sequence DataTranscription FactorsRNA, MessengerMitosisGene Expression RegulationDNA-Binding ProteinsGene Expression Regulation, DevelopmentalBase SequenceStem CellsS PhaseApoptosisCyclinsPhosphorylationMutationTime FactorsFlow CytometryCell Line, TumorTranscription, GeneticTumor Cells, CulturedModels, BiologicalRetinoblastoma ProteinCyclin-Dependent Kinase Inhibitor p21Nuclear ProteinsAmino Acid SequenceG2 PhaseMenstrual CycleCyclin-Dependent Kinase Inhibitor p27ImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionEmbryonic Stem CellsCell LineageBlotting, WesternConnexinsPhenotypeSex DifferentiationGene ExpressionTransfectionProtein-Serine-Threonine KinasesMembrane ProteinsMice, Inbred C57BLConnexin 43DNACell NucleusMice, KnockoutDown-RegulationEpithelial CellsG0 PhaseTretinoinGene Expression ProfilingCell SurvivalG2 Phase Cell Cycle CheckpointsPromoter Regions, GeneticTumor Suppressor Protein p53Protein BindingMice, TransgenicDNA ReplicationCyclin D1Tumor Suppressor ProteinsHomeodomain ProteinsTrans-ActivatorsCDC2 Protein KinaseG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 2BromodeoxyuridineZonula Occludens-1 ProteinRNA, Small InterferingProto-Oncogene ProteinsNeuronsEmbryo, MammalianFluorescent Antibody TechniqueDNA PrimersRepressor ProteinsFibroblastsCyclin EUp-RegulationDNA DamageInterphaseHeLa CellsKeratinocytesCarrier ProteinsMicroscopy, FluorescenceCell CommunicationEsophagogastric JunctionRNA Interference