607851.fig.004
Figure 4: Comparison of the IFN-γ negative and IL-4 positive (Th2) subset of CD4-positive T cells before and after treatment in the 200 group, 400 group, and 800 group. There were significant differences of Th2 cells between before and after treatment in the 400 group and 800 groups ( by Wilcoxon’s signed rank sum test), but there was no significant difference of 14 Th2 cells in the 200 group.