The TA and TB muscles from the Gaa−/− mice were also defined by mild and diffuse macrophage (F4/80+ cells) infiltration that remained stable regardless of the stage of the disease and corresponded to a limited number of cells (0.21 ± 0.08% and 0.23 ± 0.07% F4/80+ cells/fiber compared to 0.06 ± 0.03% and 0.09 ± 0.04% in the TA and TB muscles from the WT mice, respectively). This evidence concerns the gene GAA and tuberculosis.