IFNG and leprosy: In contrast with the leprosy-specific cellular responses of the proteins categorized above, several of the recombinant proteins tested, in addition to the TT/BT leprosy group, stimulated IFNγ release in the TB or EC groups (ML0022, ML2358, ML2346, ML2380, ML2541, ML2603 and ML2203) (Figure 4).