IL10 and malaria: However, the lack of neutrophil influx into tissues of S. Typhimurium and P. yoelii-coinfected CBA mice (Fig. 2B) as well as a lack of Il10 induction in bone marrow neutrophils during P. yoelii infection (Fig. S4 in Text S1) suggest that macrophage-derived IL-10 is more important than neutrophil-derived IL-10 in suppressing control of systemic S. Typhimurium infection in the malaria parasite-infected mice.