MUC2 and infection: A previous study similarly observed Muc2 downregulation at day 7 PI in G. duodenalis-infected mouse small intestines11 while in the present study, no significant differences in Muc2 gene expression were observed between uninfected and G. duodenalis GS/M infected mice, suggesting that this response may be more transient during infection with G. duodenalis, while it is sustained in response to mouse-specific G. muris.