{"code":"C805","name":"Rheumatoid Factor","terminology":"ncit","version":"26.09d","conceptStatus":"DEFAULT","leaf":true,"active":true,"synonyms":[{"name":"Rheumatoid Factor","termType":"DN","type":"FULL_SYN","typeCode":"P90","source":"CTRP"},{"name":"RF","termType":"AB","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"Rheumatoid Factor","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"RA Factor","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"NICHD"},{"name":"RF","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"NICHD"},{"name":"Rheumatoid Factor","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"NICHD"},{"name":"Rheumatoid Factor","type":"Display_Name","typeCode":"P107"},{"name":"Rheumatoid Factor","type":"Preferred_Name","typeCode":"P108"}],"definitions":[{"definition":"Antibodies in the serum of individuals with rheumatoid arthritis that react with antigenic determinants or immunoglobulins that enhance agglutination of suspended particles coated with pooled human gamma-globulin. Rheumatoid factors also occur in other autoimmune and certain infectious diseases.","code":"P97","type":"DEFINITION","source":"NCI"},{"definition":"Antibodies that bind other immunoglobulins frequently seen in rheumatoid arthritis but can be found in other autoimmune diseases.","code":"P325","type":"ALT_DEFINITION","source":"NICHD"}],"properties":[{"code":"P322","type":"Contributing_Source","value":"CTRP"},{"code":"P322","type":"Contributing_Source","value":"NICHD"},{"code":"P366","type":"Legacy Concept Name","value":"Rheumatoid_Factor"},{"code":"P106","type":"Semantic_Type","value":"Amino Acid, Peptide, or Protein"},{"code":"P106","type":"Semantic_Type","value":"Immunologic Factor"},{"code":"P207","type":"UMLS_CUI","value":"C0035448"}]}