Fig. 6

Programmed cell death-1 (PD-1), PD-ligand (PD-L)-1 and cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) percentage in peripheral blood lymphocytes using flow cytometry. Error bars indicate standard error. Comparisons between the tuberculosis (TB) and controls groups were performed using the Mann Whitney U test. ns, not significantly different