Eleonora Tresoldi, Ilaria Dell’Albani, Angela Stabilini, Tatiana Jofra, Andrea Valle, Nicola Gagliani, Attilio Bondanza, Maria Grazia Roncarolo and Manuela Battaglia (2012) “Reply to Comment on ‘Stability of human rapamycin-expanded CD4+CD25+ T-regulatory cells’ Haematologica 2011;96(9):1357–65”, Haematologica. Pavia, Italy, 97(5), pp. e17-e17. doi: 10.3324/haematol.2012.064246.