Effects of bvPLA2 treatment on Treg subpopulations in in vitro splenocyte cultures. (A) Splenocytes were stained with Treg cell phenotyping markers (CD4, CD25, Foxp3, CD62L, and CD127) and analyzed for Treg cell subsets by flow cytometry. Comparison of (B) resting Treg cell subsets (CD62LhiCD127low), (C) activated effector Treg cell subsets (CD62LlowCD127low), and (D) memory Treg cell subsets (CD62LlowCD127hi) based on expressions of CD62L and CD127 in PBS, bvPLA2, and rapamycin-treated splenocytes. Rapa, rapamycin. The data are shown as the means ± SEM. The significance was determined by one-way ANOVA followed by Tukey’s multiple comparison test. * p < 0.05, ** p < 0.01, and *** p < 0.001 vs. the PBS group.