Cell DifferentiationNeuronsStem CellsCells, CulturedGene Expression Regulation, DevelopmentalNeurogenesisTranscription FactorsCell LineagePC12 CellsSignal TransductionNerve Tissue ProteinsEmbryonic Stem CellsTretinoinNeural Stem CellsCell LineNeuritesGene Expression RegulationRNA, MessengerCell ProliferationBasic Helix-Loop-Helix Transcription FactorsCell DivisionMolecular Sequence DataImmunohistochemistryHomeodomain ProteinsDNA-Binding ProteinsMice, Inbred C57BLBase SequencePhenotypeMice, TransgenicNerve Growth FactorEmbryo, MammalianReverse Transcriptase Polymerase Chain ReactionHematopoietic Stem CellsMice, KnockoutRepressor ProteinsTransfectionGene ExpressionTranscription, GeneticGene Expression ProfilingNerve Growth FactorsSex DifferentiationChick EmbryoBone Marrow CellsNeuroblastomaTime FactorsBlotting, WesternIn Situ HybridizationMutationFlow CytometryTumor Cells, CulturedCarcinoma, EmbryonalCell Culture TechniquesNuclear ProteinsApoptosisCell CycleAmino Acid SequencePromoter Regions, GeneticModels, BiologicalDown-RegulationNervous SystemMembrane ProteinsTrans-ActivatorsBrainUp-RegulationReceptors, NotchDNA PrimersCell SurvivalFluorescent Antibody TechniqueHippocampusProto-Oncogene ProteinsOligonucleotide Array Sequence AnalysisHydraThymus GlandAntigens, DifferentiationKeratinocytesBromodeoxyuridineMesenchymal Stromal CellsNeurogliaBiological MarkersEmbryonal Carcinoma Stem CellsB-LymphocytesGranulocytesCell SeparationSOX9 Transcription FactorMonocytesGAP-43 ProteinOsteogenesisOsteoblastsCerebral CortexAnimals, NewbornAntigens, CD7NestinHelix-Loop-Helix MotifsHigh Mobility Group ProteinsTransforming Growth Factor betaPhosphorylationBlotting, NorthernRNA, Small InterferingClone CellsRats, Sprague-Dawley