Cell DifferentiationGene Expression Regulation, DevelopmentalCells, CulturedEmbryonic Stem CellsStem CellsTranscription FactorsCell LineageEmbryo, MammalianEmbryo, NonmammalianSignal TransductionCell LineCell DivisionRNA, MessengerGene Expression RegulationMolecular Sequence DataTretinoinCell ProliferationDNA-Binding ProteinsBase SequenceHomeodomain ProteinsMice, Inbred C57BLMice, KnockoutReverse Transcriptase Polymerase Chain ReactionMice, TransgenicPhenotypeEmbryonic DevelopmentSex DifferentiationTranscription, GeneticGene ExpressionIn Situ HybridizationChick EmbryoImmunohistochemistryCell CycleMorphogenesisCarcinoma, EmbryonalBlastocystRepressor ProteinsNuclear ProteinsEndodermTrans-ActivatorsPromoter Regions, GeneticMesodermCell Culture TechniquesGene Expression ProfilingAmino Acid SequenceModels, BiologicalTime FactorsTeratomaCell AggregationTransfectionTumor Cells, CulturedMutationFlow CytometryOsteogenesisPluripotent Stem CellsMesenchymal Stromal CellsBasic Helix-Loop-Helix Transcription FactorsOsteoblastsDown-RegulationXenopus ProteinsNeuronsBlotting, WesternAntigens, DifferentiationDimethyl SulfoxideOctamer Transcription Factor-3Embryonal Carcinoma Stem CellsApoptosisDNA PrimersHematopoietic Stem CellsHL-60 CellsCell NucleusGastrulaUp-RegulationB-LymphocytesLeukemia, Erythroblastic, AcuteZebrafishMuscle DevelopmentAdipogenesisBone Morphogenetic ProteinsEpithelial CellsPlasma CellsCell SurvivalMyoblastsFluorescent Antibody TechniqueCell MovementMembrane ProteinsBone Marrow CellsReceptors, NotchTeratocarcinomaGerm CellsMitosisDNARNA InterferenceBlastomeresEmbryonic and Fetal DevelopmentProto-Oncogene ProteinsPhosphorylationQuailCaenorhabditis elegansTransforming Growth Factor beta