CD8A and infection: Similarly, the other CD8+ T cells than NP118 tetramer+ CD8+ T cells also contained the higher population of CD44hiCXCR3+ cells in wild-type BALB/c mice than in CD1dKO BALB/c mice (Fig 8C), indicating that the frequency of pre-existing innate CD8+ T cells is higher in wild-type BALB/c than in CD1dKO BALB/c prior to infection, irrespectively of antigen-specificity of CD8+ T cells.