Polycythemia VeraPolycythemiaThrombocythemia, EssentialJanus Kinase 2Primary MyelofibrosisMyeloproliferative DisordersThrombocytosisErythropoietinBlood CellsPipobromanErythroid Precursor CellsErythrocytesPhlebotomyErythropoiesisHematocritReceptors, ErythropoietinReceptors, ThrombopoietinBloodlettingErythrocyte VolumeVon Hippel-Lindau Tumor Suppressor ProteinGranulocytesHematopoiesis, ExtramedullaryErythrocyte CountHemoglobinsHomozygoteSomatostatinomaBlood Cell CountRussiaThrombosisMutationHydroxyureaErythrocyte IndicesMutation, MissenseGPI-Linked ProteinsPlatelet CountLeukocyte CountHematopoietic Stem CellsIsoantigensAmino Acid SubstitutionBone MarrowErythroid CellsColony-Forming Units AssayLeukocytosisCyanosisMegakaryocytesHematopoiesisErythrocyte TransfusionHeterozygoteHematologyBlood ViscosityErythrocyte MembraneParagangliomaErythrocyte DeformabilityBudd-Chiari SyndromeSplenomegalyThrombopoietinAltitude SicknessHemoglobins, AbnormalAnoxiaLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeDiphosphoglyceric AcidsPoint MutationChromosomes, Human, 19-20Anemia