ENA Protocol - Atlas Link, Inc

The antigen is closely associated with SM antigen. Approximately 45% of patients with SLE have antibodies to RNP. RNP antibodies are also found in patients with discoid lupus, Sjogren syndrome, scleroderma, rheumatoid arthritis and MCTD (mixed connective tissue disease). Very high titers to RNP is a characteristic of MCTD (1,2,3). ................
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