IFNG and infection: On the day 9 after infection, there was no significant difference in the serum IFN-γ and IL-12 levels between the model group and the control group, while compared with the model group, the serum IL-12 and IFN-γ levels in the APS group increased significantly (IL-12: p < 0.05, IFN-γ:p < 0.01) (Figure 5(e)).