The expression of BAFF receptors (BAFFR, BCMA, and TACI) was analyzed by flow cytometry. a Percentages of CD19+BAFFR+ B cells, CD19+BCMA+ B cells, and CD19+TACI+ B cells in RA and HCs. b Percentages of CD19+BAFFR+ B cells, CD19+BCMA+ B cells, and CD19+TACI+ B cells were compared between RA and HCs. *P < 0.05 vs. HCs.