Effects of allicin treatments on Treg and IL-10 level during P. yoelii 17XL infection. (A) Absolute numbers of Treg at various time points as detected by flow cytometry analysis. (B) The concentrations of IL-10 in sera on day 3 and 5 PI. (C) The concentrations of IL-10 produced by cultured splenocytes. Concentrations of IL-10 were determined by ELISA. Data expressed as the mean with SEM (n = 3 mice per group). Results are representative of three independent experiments. Asterisks indicate statistically significant differences (**: P < 0.01) between groups.