has part has part has_part has_component has component towards quality quality erythrocyte bone marrow disorder polycythemia https://www.malacards.org/card/polycythemia MEDGEN:18552 HP:0001901 MESH:D011086 Abnormally high mass or concentration of red blood cells in the blood, either due to an increase in erythropoiesis or a decrease in plasma volume. MedDRA:10036051 Orphanet:98427 MONDO:0005571 polycythemia (disease) DOID:8432 polycythemia NCIT:C26863 EFO:0005804 polycythemia (disease) UMLS:C0032461 abnormal pathological has extra parts of type obsolete_polycythemia