Send us a Message

Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   


The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Megaloblastic bone marrow
go back to main search page
Accession:HP:0001980 term browser browse the term
Definition:Abnormal increased number of megaloblasts in the bone marrow.
Comment:A megaloblast is an abnormally large nucleated red blood cell found especially in people with pernicious anemia. Megaloblasts, like their normal counterparts, normoblasts, are immature red cell precursors in the bone marrow. Megaloblasts display both a larger size than normoblasts as well as a fine reticular nuclear structure.
Synonyms:xref: SNOMEDCT_US:167921008;   UMLS:C0238801

show annotations for term's descendants           Sort by:

Term paths to the root
Path 1
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of blood and blood-forming tissues 0
        Abnormality of bone marrow cell morphology 0
          Abnormality of multiple cell lineages in the bone marrow 0
            Megaloblastic bone marrow 0
paths to the root