DUOX1 and infection: Since we hypothesized that Duox1 could affect lung pathology during Mtb infection, lungs of Mtb-infected Duox1 KO and WT mice collected at 1, 30, and 90 day(s) post-infection, were stained with hematoxylin and eosin (Figures 3A-C for WT and Figures 3D-F for Duox1 KO mice) and examined by a board-certified veterinary pathologist blinded to the experimental groups.