Cell DifferentiationSignal TransductionCD8-Positive T-LymphocytesMice, TransgenicImmunologic MemoryMice, Inbred C57BLLymphocyte ActivationMice, KnockoutCells, CulturedStem CellsCell LineageTranscription FactorsGene Expression Regulation, DevelopmentalCell LineEmbryonic Stem CellsGene Expression RegulationCell DivisionRNA, MessengerCell ProliferationTretinoinMolecular Sequence DataHematopoietic Stem CellsDNA-Binding ProteinsPhenotypeSex DifferentiationBase SequenceBone Marrow CellsFlow CytometryReverse Transcriptase Polymerase Chain ReactionHomeodomain ProteinsGene ExpressionImmunohistochemistryGene Expression ProfilingTranscription, GeneticThymus GlandB-LymphocytesCell Culture TechniquesMutationNeuronsHydraEmbryo, MammalianKeratinocytesTumor Cells, CulturedTransfectionGranulocytesModels, BiologicalRepressor ProteinsMonocytesTrans-ActivatorsNuclear ProteinsApoptosisTime FactorsCell SeparationPromoter Regions, GeneticDown-RegulationAntigens, DifferentiationAmino Acid SequenceSOX9 Transcription FactorImmunophenotypingNerve Tissue ProteinsOsteogenesisDendritic CellsAntigens, CD7OsteoblastsBlotting, WesternCell CycleOligonucleotide Array Sequence AnalysisUp-RegulationAntigens, CDT-LymphocytesTransforming Growth Factor betaClone CellsDNA PrimersEpithelial CellsMesenchymal Stromal CellsAdipogenesisHematopoiesisProto-Oncogene ProteinsMembrane ProteinsMacrophagesChick EmbryoAntigens, CD34Fluorescent Antibody TechniqueMyoblastsT-Lymphocyte SubsetsBiological MarkersChondrocytesNeoplasm ProteinsLymphopoiesisMuscle DevelopmentMice, Inbred BALB CCytokinesAdipocytesIn Situ HybridizationAntigens, SurfaceBasic Helix-Loop-Helix Transcription FactorsHigh Mobility Group ProteinsGranulocyte-Macrophage Colony-Stimulating FactorTetradecanoylphorbol AcetateBlotting, Northern