Fig 1. Relative expression of eae and slp during E. coli O157:H7 adherence to Caco-2 cells and the initial adherence timeline of E. coli O157:H7 in vitro.

Relative expression of eae and slp during adherence are shown as the fold-change (FC) over 6 h post-infection, as compared to E. coli O157:H7 grown in cell culture mediun alone (control). Significant upregulation is defined as FC ≥ 2.0. Threshold for significance is shown at FC = 2.0, and initial adherence timeline is shown in the boxed area.