Figure 2

Expression of dopaminergic receptors in peripheral immune cells from RA patients and HC. Quantification of D₁–D₅ DR expression in CD3⁺CD56^- T cells (a), CD19⁺ B cells (b), CD3^-CD56⁺ NK cells (c) and CD14⁺ monocytes (d) from HC (female n = 24, male n = 16) and RA patients (female n = 27, male n = 15). Mixed-effects analysis with Geisser-Greenhouse correction and Sidak multiple comparison test was used for comparing DR expression between groups; **p ≤ 0.01, ***p ≤ 0.001.