Fig. 3

CD38 expression on myeloid, natural killer (NK) and T cells in peripheral blood mononuclear cells (PBMC) from healthy donors and patients with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). a Quantification of CD38 MFI on CD56⁺CD16⁺ NK cells, CD11c⁺ classical DC, and BDCA2⁺ plasmacytoid dendritic cells (DC). b Quantification of CD38 MFI on CD45RA⁺ naïve T cells, CD62L^hiCD27^hiCCR7⁺CD45RA⁻ central memory T cells (T_CM) and CD62L⁻CD45RA⁻ effector memory T cell (T_EM). c Representative fluorescence-activated cell sorting (FACS) plot of CD38 expression on CD4⁺CD127^lowCD25^hi T regulatory cells (Tregs). d Proportion of the CD38^bri subset in peripheral Tregs from healthy controls and donors with SLE or RA