MPO and coinfection: Rather, our findings thatGiardia potentiated signals of intestinal injury (mucosal IL1αand CCL11 and luminal LCN-2), but dampened markers of myeloid activation (MPO andCalprotectin) during EAEC co-infection suggests theGiardia-mediated mucosal immune modulation may have led toinappropriate and deleterious responses to bacterial co-infection.