Colony-Forming Units AssayErythropoiesisErythroid CellsErythropoietinErythroid Precursor CellsPolycythemia VeraErythroblastsHematopoietic Stem CellsPolycythemiaBenzidinesBone Marrow CellsMethylcelluloseErythrocytesReceptors, ErythropoietinBone MarrowHematopoiesisLeukemia, Erythroblastic, AcuteHematopoietic Cell Growth FactorsGlobinsGranulocytesCell DifferentiationFetal HemoglobinHemoglobin CColony-Stimulating FactorsCells, CulturedThrombocytosisAntigens, CD34Cell DivisionInterleukin-3Stem Cell FactorAnemia, AplasticMegakaryocytesCulture MediaJanus Kinase 2Thrombocythemia, EssentialGATA1 Transcription FactorCell SeparationAnemiaFetusClone CellsErythroid-Specific DNA-Binding FactorsMyeloproliferative DisordersFetal BloodRecombinant ProteinsGranulocyte-Macrophage Colony-Stimulating FactorCell LineBase SequenceIntensive Care UnitsLiverSpleenGrowth SubstancesK562 CellsStaining and LabelingMacrophagesTime FactorsGlycophoringamma-GlobinsMolecular Sequence Databeta-GlobinsReticulocytesNF-E2 Transcription Factor, p45 SubunitDose-Response Relationship, DrugFriend murine leukemia virusNF-E2 Transcription FactorGATA2 Transcription Factor