Fig. 2.

The frequency of CD4+ CD25+ Foxp3+ T cells in peripheral blood and lymph nodes in rats given 4NQO in drinking water and control rats without 4NQO. a The prevalence of CD4+ CD25+ Foxp3+ T cells in peripheral blood was gradually increased in 4NQO-induced rats as compared with normal controls. b The prevalence of CD4+ CD25+ Foxp3+ T cells in lymph nodes was higher in 4NQO-induced rats than normal controls. The data are reported as mean ± SD of three independent experiments.*P < 0.001 as compared with control