Figure 1.

A20 expression on circulating natural killer (NK) cells in patients with ankylosing spondylitis (AS). (a) CD3 and CD56 staining was used to determine NK cells. (b) Graph comparing A20 expression on total NK cells from patients with AS (n = 50) and healthy controls (HCs, n = 50). (c) Graph comparing A20 expression on CD56^dim NK cells from patients with AS and healthy controls. (d) Graph comparing A20 expression on CD56^bright NK cells from patients with AS and healthy controls. Cumulative data are shown as the mean ± standard deviation (s.d.). A P‐value <0·05 was considered statistically significant for the test; n.s. = not significant by unpaired t‐test.