CD8A and infection: However, when we plotted the percentage of CD8lo/CD11ahi or CD44hi cells, another marker used to identify Ag-experienced CD8 T cells, in Swiss mice prior to infection, versus the percentage of CD8lo/CD11ahi among CD8 T cells in PBL on day 8 following LCMV infection, we did not find a significant correlation (Figure S2B in Supplementary Material).