in this study , we documented that these antibodies were present in 47.3 % of sle patient sera , whereas they were uncommon in sera from patients with rheumatoid arthritis ( 2.8 % ) and sjogren 's syndrome ( 12.8 % ) , as well as in normal sera ( 6.4 % ) .
C0003873
rheumatoid arthritis
C1527336
sjogren 's syndrome