Of these, ML0405, ML2055, and ML2331 were incubated with blood from TT/BT and healthy household contacts (of LL/BL patients) groups; the proteins induced strong IFNγ production but weak or absent antibody responses, although ML0405 and ML2331 proteins were well recognized by serum IgG from LL/BL leprosy group [60]. The gene discussed is IFNG; the disease is leprosy.