Pared to ST, and the proportion of Treg as well as the Th17/Treg ratio was normalized following ART (data not shown). Interestingly, plasma sCD40L levels were correlated with increased Treg frequency (P = 0?1, r = 0?001) (Fig. 2b) and a low Th17/Treg ratio in all HIV-infected patients (P = 0?08, r = ??210) (Fig. 2c). Such a correlation was not observed with Th17 cell frequency (P = 0?7, data not s