MegakaryocytesThrombopoiesisThrombopoietinBlood PlateletsMegakaryocyte Progenitor CellsPloidiesThrombocytopeniaReceptors, ThrombopoietinThrombocytosisPlatelet Factor 4Platelet CountBone Marrow CellsHematopoiesisNF-E2 Transcription Factor, p45 SubunitPlatelet Membrane Glycoprotein IIbNF-E2 Transcription FactorBone MarrowGATA1 Transcription FactorPolyploidyHematopoietic Stem CellsCell DifferentiationErythroid-Specific DNA-Binding FactorsPlatelet Membrane GlycoproteinsLeukemia, Megakaryoblastic, AcuteCytoplasmic GranulesThrombocythemia, EssentialBlood Platelet DisordersPrimary MyelofibrosisPlatelet Glycoprotein GPIb-IX ComplexCells, CulturedPlatelet Glycoprotein GPIIb-IIIa ComplexAntigens, CD34Receptors, CytokineChromomycin A3Integrin beta3Cell SeparationInterleukin-3von Willebrand FactorGuinea PigsStem Cell FactorFibrinogenDynamin IIIPlatelet ActivationMyeloproliferative DisordersMicroscopy, ElectronFlow CytometryMegakaryocyte-Erythroid Progenitor CellsAcetylcholinesterasebeta-ThromboglobulinBlood Cell CountInterleukin-11Cyclin D3AncrodPurpura, Thrombocytopenic, Idiopathic