N and secretion of apical galectin 3, which in turn impairs trafficking and apical protein mistargeting of several brush border structural proteins and transporters, including villin, DPP IV, and NHE2 (639, 640). Stx causes the inhibition of protein synthesis and apoptosis in fully differentiated Caco-2 cells (Fig. 10) but not in T84 cells (641). Stx1 (642, 643) and Stx2 (643) both exhibit cytotox