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rheumatoid factors

 

Definition: antibodies in the serum of patients with rheumatoid arthritis. These factors are autoantibodies of the classes IgM, IgG, and IgA. The most common factor is IgM and is the one usually measured. Rheumatoid factors also occur in other autoimmune and certain infectious diseases.

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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