MegakaryocytesMegakaryocyte Progenitor CellsThrombopoietinPlatelet CountHematopoietic Stem CellsBone Marrow CellsThrombopoiesisBone MarrowColony-Forming Units AssayReceptors, ThrombopoietinHematopoiesisAntigens, CD34Interleukin-3Stem CellsCell DifferentiationThrombocytopeniaStem Cell FactorPloidiesBlood PlateletsCells, CulturedBone Marrow TransplantationErythropoietinGranulocyte-Macrophage Colony-Stimulating FactorCell LineageCell DivisionRecombinant ProteinsMyeloid Progenitor CellsMice, Inbred C57BLErythroid Precursor CellsThrombocytosisFlow CytometryCell ProliferationCell SeparationGranulocytesNeural Stem CellsPlatelet Membrane Glycoprotein IIbFetal BloodCell CountGranulocyte Colony-Stimulating FactorMultipotent Stem CellsGATA1 Transcription FactorColony-Stimulating FactorsMice, TransgenicEndothelial CellsAntigens, CDStem Cell TransplantationBone Marrow Diseases