title: Prostacyclin deficiency in thrombotic thrombocytopenic purpura.
mesh_terms: D011464:Epoprostenol / Q000172:deficiency*; D006801:Humans; D011453:Prostaglandins / Q000172:deficiency*; D011697:Purpura, Thrombotic Thrombocytopenic / Q000209:etiology / Q000378:metabolism*
chemical_list: D011453:Prostaglandins; D011464:Epoprostenol