Figure 9

Schematic representation of arsenic-induced Treg cells mediated immnosuppression. Exposure to arsenic promoted commitment of DP cells into CD4+ T cells in thymus. Simultaneously arsenic enhanced differentiation of splenic CD4+ T cells into Treg cells. Increased Treg cells secreted high amount of TGF-β which subsequently inhibited Th1 and Th2 related cytokines production thereby leading to immunosuppression.