Proliferating Cell Nuclear AntigenCell ProliferationCell LineageCell DifferentiationCells, CulturedStem CellsSignal TransductionCell DivisionGene Expression Regulation, DevelopmentalMice, TransgenicMice, Inbred C57BLApoptosisTranscription FactorsMolecular Sequence DataCell CycleCell Line, TumorPhylogenyRNA, MessengerImmunohistochemistryCell LineMice, KnockoutFlow CytometryHematopoietic Stem CellsCell MovementT-LymphocytesGene Expression RegulationBromodeoxyuridineLymphocyte ActivationReverse Transcriptase Polymerase Chain ReactionBase SequenceCell SurvivalPhenotypeHomeodomain ProteinsGene ExpressionDNA-Binding ProteinsB-LymphocytesEpithelial CellsBlotting, WesternTime FactorsBone Marrow CellsThymus GlandEmbryo, MammalianModels, BiologicalEmbryonic Stem CellsTumor Cells, CulturedMesodermMutationIn Situ HybridizationCell CountDown-RegulationPhosphorylationKi-67 AntigenGerm CellsMice, Inbred BALB CMorphogenesisEvolution, MolecularHematopoiesisBasic Helix-Loop-Helix Transcription FactorsClone CellsFibroblastsAmino Acid SequenceTransfectionTrans-ActivatorsUp-RegulationProto-Oncogene ProteinsReceptors, NotchRNA, Small InterferingGene Expression ProfilingGene Expression Regulation, NeoplasticCell SeparationDNA PrimersTranscription, GeneticAntigens, CDDNANuclear ProteinsCell Transformation, NeoplasticRegenerationDose-Response Relationship, DrugCell Culture TechniquesEmbryo, NonmammalianMultipotent Stem CellsRNA Interference