CXCL1 and infection: In contrast, infection and mAb-treatment hardly affected the chemokine/cytokine secretion of Ly6Chi monocytes as they only showed a weak increase (1.4-fold increase) in CXCL1 secretion in infected/treated mice as well as a slight increase in cytokines secretion (both in terms of diversity and fold increase) mainly in infected/non-treated mice (Figure 5B).