Specificity data for cynomolgus macaque (MCM) CD40L‐sBc‐stimulated regulatory T cells (Tregs). Mean and standard error of the mean (SEM) of the suppressive capacity of CD40L‐sBc Tregs to responders that were (a,b) autologous to Tregs (n = 5, n = 3), (c,d) major histocompatibility complex (MHC)‐matched (n = 4, n = 2) or (e,f) MHC‐mismatched to CD40L‐sBc used for Treg expansion (n = 3, n = 4) with a variety of stimulators. Responders were MACS‐isolated T cells from peripheral blood mononuclear cells (PBMCs) or splenocytes and stimulators were PBMCs.