ThrombopoietinMegakaryocytesThrombopoiesisReceptors, CytokineThrombocytopeniaPlatelet CountBlood PlateletsThrombocytosisHematopoietic Stem CellsMegakaryocyte Progenitor CellsPurpura, Thrombocytopenic, IdiopathicHematopoiesisStem Cell FactorAntigens, CD34Neoplasm ProteinsProto-Oncogene ProteinsInterleukin-3HydrazinesJanus Kinase 2Interleukin-11Bone Marrow CellsMyeloproliferative DisordersRecombinant ProteinsFetal BloodErythropoietinPrimary MyelofibrosisThrombocythemia, EssentialColony-Forming Units AssayCell DifferentiationPlatelet TransfusionLeukemia, Megakaryoblastic, AcuteUpper Extremity Deformities, CongenitalPancytopeniaCell DivisionOsteosclerosisSTAT5 Transcription FactorCells, CulturedMilk ProteinsPlateletpheresisPlatelet Membrane Glycoprotein IIbBone MarrowPloidiesNF-E2 Transcription FactorSelenomethionineSignal TransductionBenzoatesBlood CellsNF-E2 Transcription Factor, p45 SubunitHematopoietic Cell Growth FactorsPlatelet Glycoprotein GPIb-IX ComplexCell LineageTYK2 KinasePolycythemia VeraCulture Media, Serum-FreeErythroid Precursor CellsPlatelet AggregationReceptors, ErythropoietinErythroid-Specific DNA-Binding FactorsReticulin