Fig. 1From: Soluble programmed death molecule 1 (sPD-1) as a predictor of interstitial lung disease in rheumatoid arthritisConcentrations of sPD-1 in patients with rheumatoid arthritis (RA) and Healthy controls (HC) (A) and their relationship between anti-CCP (B), rheumatoid factor (RF) (C) and IgG (D)Back to article page