Levels of «Ly6Chi» monocytes also increased on day 6 p.i. in CCR2-/- (from 1.0%±0.1 prior to infection to 5.9%±1.7; P<0.001 (not indicated)) and CCR2-/-→WT (from 1.3%±0.5 to 3.8%±1.0; P<0.05 (not indicated)). Here, CCR2 is linked to infection.