Representative histopathological images of lungs, 45 days post Mtb challenge (A) Saline, (B) infection control, (C) BCG, (D) Advax4, (E) Advax4 + CMX, (F) Advax4 + ECMX. H&E staining, x100 magnification. Inflammatory injury reduction is observed 45 days after challenge in the Advax4 + ECMX group.