Figure 3

Aggregative "stacked-brick" adherence to cultured intestinal epithelial cells. Outbreak E. coli O104:H4 isolate LB226692 (A); an enteroaggregative E. coli (EAggEC) strain (positive control) (B); HUSEC041 (C); HUSEC037 (negative control) (D). Reproduced from [33] with permission (licence number 2775450359431, October 24, 2011).