Cell DifferentiationCell LineageStem CellsEmbryonic Stem CellsLymphopoiesisTranscription FactorsCells, CulturedHematopoietic Stem CellsGene Expression Regulation, DevelopmentalSignal TransductionMice, Inbred C57BLMice, KnockoutHomeodomain ProteinsGene Expression RegulationCell ProliferationMice, TransgenicBone Marrow CellsCell LineMesenchymal Stromal CellsDNA-Binding ProteinsB-LymphocytesReverse Transcriptase Polymerase Chain ReactionTranscription, GeneticGene Expression ProfilingMolecular Sequence DataCell DivisionRNA, MessengerSex DifferentiationBase SequencePhylogenyPhenotypeEmbryo, MammalianTretinoinImmunohistochemistryBasic Helix-Loop-Helix Transcription FactorsGene ExpressionMesodermIn Situ HybridizationFlow CytometryOsteogenesisOsteoblastsAntigens, DifferentiationMorphogenesisNeuronsTrans-ActivatorsHematopoiesisReceptors, NotchModels, BiologicalEndodermCell Culture TechniquesThymus GlandAdipogenesisMutationPromoter Regions, GeneticMuscle DevelopmentAmino Acid SequenceTime FactorsGerm CellsMultipotent Stem CellsRepressor ProteinsPluripotent Stem CellsDNA PrimersEmbryo, NonmammalianMyoblastsNuclear ProteinsTumor Cells, CulturedEvolution, MolecularEpidermisEpithelial CellsClone CellsBone Morphogenetic ProteinsNerve Tissue ProteinsAdipocytesTransfectionCell SeparationEctodermMyoD ProteinCell CycleApoptosisDown-RegulationBiological MarkersT-LymphocytesProto-Oncogene ProteinsKeratinocytesBlotting, WesternSequence Analysis, DNAPolymerase Chain ReactionGenetic VariationNeural Stem CellsUp-RegulationFluorescent Antibody TechniqueGreen Fluorescent ProteinsGranulocytesMembrane ProteinsChick EmbryoCell SurvivalLeukemia, Erythroblastic, AcuteChimeraEmbryonic DevelopmentReceptor, Notch1