Fig 5.

Frequencies of IFN-γ-producing CD4⁺ and CD8⁺ T cells in ATB with different AFB smear values. PBMC from ATB were stimulated for 144 h with CFP-10 and then evaluated for the frequency of IFN-γ-producing cells as described in Materials and Methods. Frequencies of IFN-γ-producing CD4⁺ and CD8⁺ T cells in patients with AFB smear values of 1+ (white circles), 2+ (gray circles), and 3+ (black circles). Kruskal-Wallis test with Dunn's multiple comparison test.