Reply to Comment on 'Stability of human rapamycin-expanded CD4(+)CD25(+) T-regulatory cells' Haematologica 2011;96(9):1357-65

We have read the letter by He and Lv[1][1] and we think the issues raised by the authors are not pertinent to our published work. Specifically, He and Lv raise three issues. 1. They claim that we cannot conclude from our study that rapamycin has an intrinsic role in the stability of Treg cells. We