CD86 and systemic lupus erythematosus: There was no significant change in CD86+ B lymphocytes under the influence of the UC-MSC-conditioned medium in patients with SLE (7.55 ± 5.44% vs. 8.08 ± 4.78%; p = 0.4038) (Figure 3A(b)) or in terms of CD86 MFI (137.08 ± 28.69 vs. 146.32 ± 37.83; p = 0.0569) (Figure 3B(b)).