Fig. 2From: Circulating secretory IgA antibodies against cyclic citrullinated peptides in early rheumatoid arthritis associate with inflammatory activity and smokingWestern blotting for the detection of secretory component in an (A) immunoglobulin G (IgG) anti-cyclic citrullinated protein (anti-CCP) antibody fraction and (B) an IgA anti-CCP fraction. An 80 kDa band corresponding to the secretory component is visible in the IgA anti-CCP fractionBack to article page