IL17F and infection: The anti-mIL-17A antibody (rat IgG2a; MAB421 R&D; clone 50104) used here, was previously shown to be active during several weeks in different mouse models39, 40; the anti–IL-17F antibody (rat IgG1; 16–7473 e-bioscience; clone RN17), effective in other mouse infection models32 could be directly compared with an anti-mTNFα antibody of the same isotype (rat IgG1; MAB4101 R&D; clone MP6-XT22) utilized earlier in murine M. tuberculosis infection experiments41, 42.