MegakaryocytesThrombopoiesisMegakaryocyte Progenitor CellsBlood PlateletsThrombopoietinThrombocytopeniaPlatelet Membrane Glycoprotein IIbNF-E2 Transcription Factor, p45 SubunitPloidiesNF-E2 Transcription FactorNonmuscle Myosin Type IIAPlatelet CountHematopoiesisPlatelet Glycoprotein GPIb-IX ComplexPlatelet Glycoprotein GPIIb-IIIa ComplexCell DifferentiationBone Marrow CellsCells, CulturedPurinergic P2Y Receptor AntagonistsReceptors, ThrombopoietinHematopoietic Stem CellsThrombocytosisDisintegrinsPlatelet Factor 4FibrinogenMicrotubulesCell SizeBone MarrowTubulinCytoplasmGATA1 Transcription FactorPolyploidyErythroid-Specific DNA-Binding FactorsActinsPlatelet Membrane GlycoproteinsLeukemia, Megakaryoblastic, AcuteCytoplasmic GranulesThrombocythemia, EssentialBlood Platelet DisordersPrimary MyelofibrosisAntigens, CD34Receptors, CytokineChromomycin A3Integrin beta3Cell Separation