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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:Abnormal megakaryocyte morphology
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Accession:HP:0012143 term browser browse the term
Definition:Any structural anomaly of megakaryocytes. Mature blood platelets are released from the cytoplasm of megakaryocytes, which are bone-marrow resident cells.
Synonyms:exact_synonym: Abnormality of cells of the megakaryocyte lineage
 xref: UMLS:C4023026

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of blood and blood-forming tissues 0
        Abnormality of bone marrow cell morphology 0
          Abnormal megakaryocyte morphology 0
            Increased megakaryocyte colony forming unit count 0
            Increased megakaryocyte count 0
            Increased micromegakaryocyte count 0
            Increased multinucleated megakaryocyte count 0
            Megakaryocyte dysplasia 0
            Megakaryocyte nucleus hyperlobulation 0
            Megakaryocyte nucleus hypolobulation 0
            Megakaryocytopenia 0
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