TGFB1 and infection: The decrease in IL-10 and TGF-β measured in the IEP group may play an important role in the resolution of the infection since the inflammatory cytokines IFN-γ and IL-12 were not modified in this group at the end of 12 weeks of infection in the systems stimulated by the parasitic antigen (popliteal lymph node) (Figures 5D,E).