rheumatoid factor

noun

Definition of rheumatoid factor

: an autoantibody of high molecular weight that reacts against IgG immunoglobulins and is often present in rheumatoid arthritis

First Known Use of rheumatoid factor

1949

in the meaning defined above

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Medical Dictionary

rheumatoid factor

noun

medical Definition of rheumatoid factor

: an autoantibody of high molecular weight that reacts against immunoglobulins of the class IgG and is often present in rheumatoid arthritis

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