Polycythemia VeraPolycythemiaMyeloproliferative DisordersThrombocythemia, EssentialJanus Kinase 2Primary MyelofibrosisThrombocytosisPipobromanReceptors, ThrombopoietinErythroid Precursor CellsErythropoietinAloePhlebotomyErythropoiesisGranulocytesHematopoiesis, ExtramedullarySplenomegalyLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeHydroxyureaMutationReceptors, ErythropoietinThrombosisMutation, MissenseBone Marrow NeoplasmsBone MarrowMegakaryocytesHematocritHematopoietic Stem CellsBloodlettingAmino Acid SubstitutionLeukemia, Myelogenous, Chronic, BCR-ABL PositiveMyelodysplastic-Myeloproliferative DiseasesErythroid CellsBudd-Chiari SyndromePlatelet CountThrombopoietinColony-Forming Units AssayLeukocytosisLeukemia, Myelomonocytic, ChronicGPI-Linked ProteinsChromosomes, Human, 19-20STAT5 Transcription FactorIsoantigensLeukemia, Myelomonocytic, JuvenileHematopoiesisValineHomozygoteLeukemia, MyeloidJanus KinasesPoint MutationLeukemia