IFNG and infection: To compare the magnitude of Mtb antigen-specific CD8+ T cell responses in B6 and Kb-/-Db-/-M3-/- mice, we isolated lymphocytes from the lungs of B6 and Kb-/-Db-/-M3-/- mice at different time points after infection and determined the number of IFN-γ-producing CD8+ T cells upon stimulation with Mtb whole cell lysate (WCL)-pulsed B6 and Kb-/-Db-/-M3-/- BMDCs, respectively.