IL17A and leprosy: Dermal γδ T cells were approximately 30% IL-17A+ in TT leprosy and in LL were nearly 20% (Figures 2A, B), whereas the fraction for CD4+ T cells was only about 20% in TT groups with even lower percentage in LL groups (Figures 2C, D), indicating higher fraction of IL-17A+ in γδ T cells than in CD4 T cells.