title: Polycythemic donors--are they useful and safe?
mesh_terms: D000017:ABO Blood-Group System; D001782:Blood Donors; D001803:Blood Transfusion; D004906:Erythrocyte Count; D006452:Hemoglobinometry; D006505:Hepatitis / Q000209:etiology; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D008875:Middle Aged; D009369:Neoplasms / Q000209:etiology; D011087:Polycythemia Vera / Q000097:blood*; D012204:Rh-Hr Blood-Group System; D013927:Thrombosis / Q000209:etiology; D065227:Transfusion Reaction
chemical_list: D000017:ABO Blood-Group System; D007166:Immunosuppressive Agents; D012204:Rh-Hr Blood-Group System