MegakaryocytesMegakaryocyte Progenitor CellsThrombopoietinHematopoietic Stem CellsHematopoietic SystemBone Marrow CellsThrombopoiesisHematopoiesisColony-Forming Units AssayReceptors, ThrombopoietinAntigens, CD34Cell DifferentiationInterleukin-3Stem CellsThrombocytopeniaStem Cell FactorBone MarrowPloidiesCells, CulturedBlood PlateletsCell LineageErythropoietinGranulocyte-Macrophage Colony-Stimulating FactorCell DivisionMyeloid Progenitor CellsRecombinant ProteinsMice, Inbred C57BLErythroid Precursor CellsFlow CytometryCell ProliferationPlatelet CountCell SeparationThrombocytosisFetal BloodMultipotent Stem CellsErythropoiesisYolk SacMice, TransgenicGranulocytesMice, KnockoutNeural Stem CellsBlood Cell CountGene Expression Regulation, DevelopmentalPlatelet Membrane Glycoprotein IIbHematopoietic Stem Cell TransplantationHematopoiesis, ExtramedullaryGATA1 Transcription FactorAntigens, CDHematopoietic Cell Growth FactorsSignal TransductionProto-Oncogene Proteins c-kitBone Marrow TransplantationBlood CellsEndothelial CellsTranscription FactorsCell CountMesonephrosEmbryo, MammalianGranulocyte Colony-Stimulating FactorWhole-Body IrradiationStem Cell TransplantationStem Cell NicheColony-Stimulating FactorsRetroviridaeProto-Oncogene ProteinsMegakaryocyte-Erythroid Progenitor CellsPlatelet Factor 4Radiation ChimeraNeurogenesisHematopoietic Stem Cell MobilizationCell SurvivalTime FactorsGene Expression RegulationClone CellsLymphoid Progenitor CellsMyeloid CellsCell LineAdult Stem CellsCore Binding Factor Alpha 2 SubunitRadiation Injuries, ExperimentalRadiation-Protective AgentsReverse Transcriptase Polymerase Chain ReactionPhenotypeNeoplastic Stem CellsSpleenApoptosisNestinReceptors, CytokineLeukemiaDNA-Binding ProteinsMice, SCIDRNA, MessengerMolecular Sequence DataCell CycleChemokine CXCL12Stromal CellsGene ExpressionImmunohistochemistryOligodendrogliaCell Culture Techniques