sera from 73 patients , 24 with rheumatoid arthritis ( ra ) , 10 with sjogren 's syndrome ( ss , 4 with and six without ra ) , 17 with reiter 's syndrome ( rs ) , 10 with systemic lupus erythematosus ( sle ) , 9 with yersinia arthritis ( ya ) , and 3 with mixed connective tissue disease ( mctd ) were examined by enzyme-immunoassay ( eia ) for the presence of c3c-binding igg , igm , and iga activity ( c3cbigg , c3cbigm , c3cbiga ) .
C1527336
sjogren 's
C0003873
ra