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rheumatoid factor

This is a heterogenous group of autoantibodies directed against human IgG which is elevated with many clinical conditions, among them: rheumatoid arthritis, systemic lupus erythematosus, Sjogren's syndrome, polymyositis, scleroderma, tuberculosis, leprosy, syphilis, and subacute bacterial endocarditis.

Selected rheumatoid factor links:

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