noun Date: 1949 an autoantibody of high molecular weight that reacts against IgG immunoglobulins and is often present in rheumatoid arthritis
RHEUMATOID FACTOR
Meaning of RHEUMATOID FACTOR in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012