Multipotent Stem CellsAdult Stem CellsCell DifferentiationStem CellsCell LineageMesenchymal Stromal CellsCells, CulturedStem Cell TransplantationHematopoietic Stem CellsBone Marrow CellsNevus, Sebaceous of JadassohnCell ProliferationLymphoid Progenitor CellsGene Expression Regulation, DevelopmentalCell- and Tissue-Based TherapyMyeloid Progenitor CellsAntigens, CD34Colony-Forming Units AssayHematopoiesisOctamer Transcription Factor-3Nerve Tissue ProteinsNeuronsTranscription FactorsSignal TransductionLymphopoiesisNeural Stem CellsMice, Inbred C57BLFlow CytometryCell SeparationImmunohistochemistryErythroid Precursor CellsFetal Stem CellsMice, TransgenicNeurogenesisProto-Oncogene Proteins c-kitRegenerationBasic Helix-Loop-Helix Transcription FactorsBone Marrow