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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:Abnormality of the immune system
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Accession:HP:0002715 term browser browse the term
Definition:An abnormality of the immune system.
Comment:The immune system is composed of organs and interdependent cell types that collectively protect the body from infections and from the growth of tumor cells. The organs of the immune system comprise the bone marrow, the spleen, the thymus,the lymph nodes, and the cell types comprise B cells, T cells, natural killer cells, granulocytes,dendritic cells, and macrophages.
Synonyms:exact_synonym: Immunological abnormality
 alt_id: HP:0003257;   HP:0003346;   HP:0010986
 xref: UMLS:C4021753

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the immune system 0
        Abnormal immune system morphology + 0
        Abnormality of immune system physiology + 0
        Abnormality of the lymphatic system + 0
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