Erythroid Precursor CellsErythropoiesisErythroblastsErythropoietinErythroid CellsGlobinsErythrocytesHematopoietic Stem CellsReticulocytesCell DifferentiationHemoglobinsCells, Culturedbeta-ThalassemiaLeukemia, Erythroblastic, AcuteGlycophorinBone MarrowGATA1 Transcription FactorProtein PrecursorsBone Marrow CellsReticulocytosisReceptors, ErythropoietinErythroid-Specific DNA-Binding FactorsPolycythemiaMolecular Sequence DataColony-Forming Units AssayStem CellsHematopoiesisPolycythemia VeraFetal HemoglobinCell Lineagebeta-GlobinsK562 CellsRed-Cell Aplasia, PureThalassemiaCell DivisionBase Sequencealpha-GlobinsRNA, MessengerAnemiaYolk SacAnemia, SideroblasticCell LineAntigens, CD34Receptors, TransferrinTranscription FactorsCell SeparationMegakaryocytesAmino Acid SequenceErythrocyte AgingIron RadioisotopesFriend murine leukemia virusRecombinant ProteinsSpleenAnemia, Dyserythropoietic, CongenitalStem Cell FactorFlow CytometryAnemia, HemolyticMutationDNA-Binding ProteinsMice, Inbred C57BLOligodendrogliaApoptosisLeukemia, ExperimentalPeptide HydrolasesAmyloid beta-Protein PrecursorGene Expression RegulationProtein Processing, Post-TranslationalGene Expression Regulation, DevelopmentalVulvaGene ExpressionIronEndopeptidasesMyelodysplastic SyndromesKineticsEnzyme PrecursorsHemeFetusPhenotypeFetal BloodErythrocyte MembraneTime FactorsNeural Stem CellsLiverProto-Oncogene ProteinsNeuronsTumor Cells, CulturedSignal TransductionMembrane ProteinsMacrophagesMice, TransgenicBasic Helix-Loop-Helix Transcription FactorsProteolysisPeptide FragmentsMolecular WeightCell ProliferationGranulocytesRNA PrecursorsImmunohistochemistryElectrophoresis, Polyacrylamide GelCloning, Molecular