Eimeria tenella antigen-binding specific antibodies in the caecal epithelium 21 days post-infection, were higher when treated with 0.5% Ag (group G4), with IgA (p = 0.02) and IgM (p = 0.04) increased compared with the infected and un-treated controls in group G2 (Fig. 3C). The gene discussed is CD40LG; the disease is infection.