has_part has part has part characteristic of part of inheres in part of inheres in part of has modifier Phenotypic abnormality Abnormality of the immune system HP:0010986 UMLS:C4021753 HP:0002715 An abnormality of the immune system. human_phenotype HP:0003257 Abnormality of the immune system HP:0003346 Immunological abnormality 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. quality abnormal immune system