Rapamycin increased the level of regulatory T cells (Tregs) in the ipsilateral hemisphere. Dot plots labeled with CD4 and Foxp3 show the brain lymphocytes from (A) control group, (B) intracerebral hemorrhage (ICH) group, and (C) 150 μg/kg rapamycin-treated group. (D) A statistical graph for the three groups. There were significantly higher levels of Tregs in the rapamycin-treated group than the control and ICH groups. *P<0.001.