As shown in Fig 6, enriched CD8+ T cells from lungs and spleens of Kb-/-Db-/-M3-/- mice at day 30 post-infection responded to most Mtb antigens tested except Ag85A and the TB10.44−11 peptide, which is known to be restricted by MHC Ia molecule H2-Kb [45] (Fig 6A and 6B). Here, CD8A is linked to infection.