Figure 1: EG stands for experiment group; CG stands for control group; BT stands for “before treatment”. AT stands for “after treatment”. Ratio stands for the tenfold ratio of CD4+ T cells to CD8+ T cells. There was no significant difference regarding the average values of T-cell subgroup between two groups before treatment and two months after treatment ( ). However, the ratio of CD4+ T cell to CD8+ T cell in experiment group two months after treatment increased more than that in control group ( ).