Figure 1From: Enhanced reactivity to pain in patients with rheumatoid arthritisChanges in serum levels of (a) cortisol, (b) interleukin-6 (IL-6), and (c) tumor necrosis factor-alpha (TNF-α) over the course of the session. Data are presented as mean ± 95% confidence interval. RA, rheumatoid arthritis.Back to article page