KLRG1 and infection: Expression of CD127, CD62L, and KLRG1 was comparable between WT and DKO OT1 cells on day 7 at the peak of infection (Figure 2d); however, after day 14 of infection, CD127 expression was lower and KLRG1 expression was higher in DKO OT1 T cells than in WT OT1 T cells.