Figure 2: The suppressive activity of Treg cells before and after the treatment in the experimental group; (a) the suppressive ability for CD4+ T cells; (b) the suppressive ability for CD8+ T cells. The pretreatment baseline levels of Treg cells suppression was significantly lower for CD4+ cells and CD8+ cells than those in the healthy controls ( % versus %, ; % versus 10. %, ). Following the rapamycin treatment, the suppression for CD4+ cells ( %, ) and CD8+ cells ( %, ) was stronger than that before the treatment.