Age and sex-matched B6 (black) and Nos2 -/- (violet) mice or LysM wt Nos2 fl/fl (gray) and LysM Cre Nos2 fl/fl (magenta) littermates were intraperitoneally injected with 5 Me49-GFP-Luc cyst. Euthanasia criteria (Log-rank test) were monitored for 42 days post-infection (dpi).