Fig. 2

The level of peripheral lymphocyte and CD4 + T lymphocyte subsets in pSS-RTA, pSS-no-RTA and HCs. pSS: primary Sjogren’s syndrome; RTA: renal tubular acidosis; pSS-no-RTA: pSS without RTA; pSS-RTA: pSS with RTA. HCs: healthy controls; *P < 0.05, **P < 0.01, ***P < 0.001