In contrast to day 3 post the infection no. 1 (PI-1) which is shown in Figure 4, we found that at day 3 post infection no. 2 (PI-2), the percentage of CD4 T cells in the GT was now similar in the SC and SIM groups (20.8% in SC animals and 18.9% in SIM animals) (Figure 5). Here, CD4 is linked to infection.