IL10 and infection: Interestingly, IL-10flox/LysMCre infected mice exhibited decreased levels of IL-10 in the serum (Fig. 4A) when compared to control animals only at 3 d.p.i., Moreover, IL-10flox/LysMCre mice exhibited increased ability to control B. abortus infection in both spleen (Fig. 4B) and liver (Fig. 4C), only at initial stages of infection.