IFN-γ^- and IFN-γ⁺ Tregs are equivalently suppressive.

<p>Lymphocytes from naïve <i>Foxp3^gfp</i> mice were treated with anti-CD3 with or without IL-12 for 66 hr. Tregs were sorted and co-cultured with CFSE-labeled Tconvs at the indicated ratios for 66 hr in the presence of irradiated splenocytes and anti-CD3 mAb. Tconvs were then analyzed for CFSE dilution. Samples were analyzed in triplicate. (A) Representative histograms are shown. (B) Normalized DI were calculated for each group. Data are from one experiment representative of 3 independent experiments.