CD4 and infection: The Pro10, Pro20, Amo20, and Pro20 + Amo20 groups, but not the Pro40 group, showed higher proportions of CD3+ and CD3+CD4+ T cells compared with the infection group (p < 0.05) (Figure 3 and Figure 4), while the proportions of CD3+CD8+ T cells were increased in the Pro20 and Amo20 groups (p < 0.05) (Figure 5).