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Electron microscopy examination of Afa/Dr DAEC interaction with polarized T84 monolayers. (A) T84 cells infected with the nonadherent E. coli HB101 bacteria show a regular brush border. (B) Wild-type Afa/Dr DAEC C1845 bacteria are associated with the brush border and show a disappearance of the regular brush border. Bars, 0.5 μm.
