Cell Differentiationalpha-FetoproteinsFetusFetal ProteinsGene Expression Regulation, DevelopmentalMolecular Sequence DataBase SequenceRNA, MessengerIn Situ HybridizationTissue DistributionEmbryo, MammalianAmino Acid SequenceConnective TissueOrgan SpecificityEmbryonic and Fetal DevelopmentAlternative SplicingCartilageTranscription FactorsMice, Inbred C57BLMesodermGene Expression RegulationGene Expression ProfilingCloning, MolecularImmunohistochemistryHomeodomain ProteinsSignal TransductionCell LineGene ExpressionDNA-Binding ProteinsCells, CulturedStem CellsMice, TransgenicMice, KnockoutCell ProliferationCell LineageCell DivisionReverse Transcriptase Polymerase Chain ReactionSex DifferentiationTranscription, GeneticEmbryonic Stem CellsDNA, ComplementaryTestisMice, Inbred BALB CMice, Inbred StrainsLiverBlotting, NorthernPromoter Regions, GeneticPhenotypeAnimals, NewbornBrainTretinoinBlotting, WesternNeuronsTransfectionSequence Homology, Amino AcidTime FactorsDNA PrimersMice, Inbred ICRSpleenDNAOsteogenesisPolymerase Chain ReactionTumor Cells, CulturedProtein IsoformsOsteoblastsNerve Tissue ProteinsAntigens, DifferentiationTrans-ActivatorsFluorescent Antibody TechniqueKidneyNuclear ProteinsHematopoietic Stem CellsProteinsMesenchymal Stromal CellsMice, Mutant StrainsThymus GlandMutationMembrane ProteinsBone Marrow CellsNeurogenesisSpecies SpecificityEpithelial CellsCell Culture TechniquesAdipogenesisBasic Helix-Loop-Helix Transcription FactorsAgingRepressor ProteinsUp-RegulationMyoblastsNeural Stem CellsApoptosisFlow CytometryMuscle DevelopmentModels, BiologicalKeratinocytesCell CycleRNAOligonucleotide Array Sequence AnalysisCarrier ProteinsCell Nucleus