IFNG and tuberculosis: The AMs from the TB patients had greater IFN-γ production (377 ± 116 ng/mL) at baseline, compared with non-TB subjects (48 ± 32 ng/mL; p = 0.022), and further increased upon stimulation with 5 μg/mL heat-killed Mtb H37Ra (4649 ± 1512; p = 0.025, compared with unstimulated, and p = 0.001, compared with the non-TB subjects; Table 2).