CXCR3 and infection: We also assessed the expression of the Cxcl11aa ligand, as it is the most up‐regulated one out of the 7 Cxcl11‐like ligands during M. marinum infection, in both cxcr3 mutants.29, 31 The gene was induced upon infection independently of the expression on cxcr3.2 and cxcr3.3 (Fig. 3I).