_:vb50956219 . _:vb50956219 "url:https://www.mayoclinic.org/diseases-conditions/polycythemia-vera/symptoms-causes/syc-20355850"^^ . _:vb50956219 "A myeloproliferative neoplasm characterized by erythroid hyperplasia, myeloid leukocytosis, thrombocytosis, and splenomegaly."^^ . _:vb50956219 "url:https://en.wikipedia.org/wiki/Polycythemia_vera"^^ . _:vb50956219 . _:vb50956219 . _:vb50956219 . _:vb50956219 "url:https://rarediseases.info.nih.gov/diseases/7422/polycythemia-vera"^^ . _:vb50956219 . _:vb50956219 .