Figure 2.

Decreased serum sFasL expression in patients with severe disease activity. The subjects in SS group were grouped into mild (n = 37) and severe (n = 23) disease activity dependent on the SSDAI score as described in methods. Total SSDAI score was performed when the serum was collected. Each symbol represented an individual sample and horizontal lines showed median values. Mann–Whitney U test was conducted to compare the data respectively. P value < 0.05 was considered statistically significant.