Table 1.

Strains used in this study

Strain	Description	Reference
042	Wild-type EAEC strain expressing AAF/II	Nataro et al., 1985
HS	Commensal E. coli strain	Levine et al., 1978
MG1655	Commensal E. coli K-12 strain	Blattner et al., 1997
F-18	Commensal E. coli strain	Cohen et al., 1983