ARG1 and Salmonella Infections: Here, we investigated the role of ARG1 in Salmonella infections in vitro and in vivo by analysing the antimicrobial activity of BMDM from C57BL/6N wild-type and ARG1-deficient Tie2Cre+/–ARG1fl/fl mice and by monitoring the course of intraperitoneal S.tm infections in these mice as well as in wild-type littermates treated with an inhibitor of ARG1.