Fig. 2From: Immunoregulatory soluble CTLA-4 modifies effector T-cell responses in systemic lupus erythematosusSerum levels of sCTLA-4 in SLE patients compared with age- and sex-matched healthy donors measured by ELISA (n = 45 per group; non-parametric Mann-Whitney U test). ns not significant, sCTLA-4 soluble cytotoxic T lymphocyte antigen 4, SLE systemic lupus erythematosusBack to article page