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. 2011 Nov 21;590(Pt 3):433–440. doi: 10.1113/jphysiol.2011.220822

Figure 5. Enterotoxigenic E. coli (ETEC) form outer membrane vesicles (OMVs) from lipid and proteins constituents of the bacterial outer membrane.

Figure 5

These vesicles contain a periplasmic space which carries heat labile enterotoxin (LT) in addition to other proteins such as alkaline phosphatase. LT in OMVs can interact with its receptor GM1 and mediate delivery of OMVs into the host cell, thus enhancing toxin delivery.