Figure 1
From: Myocardial citrullination in rheumatoid arthritis: a correlative histopathologic study
Representative sections are shown demonstrating anti-citrulline staining in rheumatoid arthritis myocardium (A) and control myocardium (B). Citrullination was restricted to the myocardial interstitium in both groups, with staining intensity qualitatively higher in the RA group. Interstitial citrullination was also observed in myocardial samples from fatal myocarditis and scleroderma patients with a qualitative intensity similar to the control group (not depicted).