Anti-SSB antibodies were measured by ELISA in patients with various kinds of connective tissue diseases using SSB antigen purified from fresh rabbit thymus. The SSB antigen reacted with anti-SSB standard serum, and the positive rates in SS, SLE, RA, PBS and MCTD were 55.1%, 48.3%, 32.8%, 30.8% and 26.3%, respectively. The titers of anti-SSB antibodies were… (More)
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