Cell DifferentiationNeuritesNeuronsCells, CulturedSignal TransductionGene Expression Regulation, DevelopmentalCell LineTranscription FactorsStem CellsGene Expression RegulationEmbryonic Stem CellsCell LineageNerve Tissue ProteinsMice, Inbred C57BLMolecular Sequence DataRNA, MessengerImmunohistochemistryMice, KnockoutPC12 CellsMice, TransgenicTretinoinCell ProliferationCell DivisionCell DeathDNA-Binding ProteinsBrainBase SequenceApoptosisHomeodomain ProteinsCell SurvivalEmbryo, MammalianReverse Transcriptase Polymerase Chain ReactionPhenotypeTransfectionTime FactorsIn Situ HybridizationBlotting, WesternNeuroblastomaRats, Sprague-DawleySex DifferentiationGene ExpressionHippocampusTranscription, GeneticBasic Helix-Loop-Helix Transcription FactorsMutationModels, BiologicalAmino Acid SequenceNeurogenesisTumor Cells, CulturedPromoter Regions, GeneticCell Culture TechniquesNeurogliaCerebral CortexRepressor ProteinsDown-RegulationUp-RegulationAnimals, NewbornMembrane ProteinsTrans-ActivatorsNuclear ProteinsGene Expression ProfilingPhosphorylationFlow CytometryNeural Stem CellsMesenchymal Stromal CellsAntigens, DifferentiationNerve Growth FactorsOsteogenesisCell Line, TumorProtein BindingDNA PrimersChick EmbryoFluorescent Antibody TechniqueReceptors, NotchOsteoblastsDimethyl SulfoxideCell CycleHematopoietic Stem CellsEpithelial CellsHL-60 CellsMorphogenesisNerve Growth FactorProto-Oncogene ProteinsNeuroprotective AgentsB-LymphocytesAstrocytesRNA, Small InterferingMuscle DevelopmentLeukemia, Erythroblastic, AcuteBone Marrow CellsNerve DegenerationAdipogenesisCoculture TechniquesCell CountNeuronal PlasticityMyoblastsPlasma CellsGreen Fluorescent ProteinsCarrier ProteinsMice, Mutant Strains