Relative mRNA expression patterns of CD25, forkhead box P3 (FoxP3), interleukin (IL)-10, IL-2, interferon (IFN)-γ, perforin and granzyme B within CD25+ T cells that were isolated from peripheral blood mononuclear cells (PBMC) of rabbit anti-thymocyte globulins (rATG) (striped bars, n = 3) and control patients (grey bars, n = 3). Data are shown as mean ± standard error of the mean. Statistical significance was tested by Mann–Whitney U-test, *P < 0·05.