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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:Bleeding requiring red cell transfusion
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Accession:HP:0011888 term browser browse the term
Definition:Bleeding sufficiently severe as to require red cell transfusion (WHO Grade 3 or 4).
Synonyms:xref: UMLS:C4023144

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Term paths to the root
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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of blood and blood-forming tissues 0
        Abnormal bleeding 0
          Bleeding requiring red cell transfusion 0
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