Similar to our previous results, the frequency of cells releasing IFN-γ in response to LppZ was significantly higher in the TB group than in HCs (p < 0.0001) (Figure 3A) and this was accompanied by higher LppZ-specific IgA level in the TB group than that in HCs in the same cohorts (p < 0.0001) (Figure 3B). The gene discussed is IFNG; the disease is tuberculosis.