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. 1979 Apr;38(2):161-5.
doi: 10.1136/ard.38.2.161.

IgA rheumatoid factor in the sera and saliva of patients with rheumatoid arthritis and Sjögren's syndrome

J V Dunne, D A Carson, H L Spiegelberg, M A Alspaugh, J H Vaughan

IgA rheumatoid factor in the sera and saliva of patients with rheumatoid arthritis and Sjögren's syndrome

J V Dunne et al. Ann Rheum Dis. 1979 Apr.

Abstract

With a sensitive radioimmunoassay we have found elevated IgA rheumatoid factor (IgA-RF) levels in the sera of patients with rheumatoid arthritis, Sjögren's syndrome, and systemic lupus erythematosus. The IgA--RF showed a pattern of reaction with human IgG subclasses and animal gammaglobulins similar to that of IgM-RF from the same patients. Rheumatoid factors of both classes were shown to be present in saliva of patients with rheumatoid arthritis and Sjögren's syndrome.

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