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Rabbit ileal loop test analyzed by TEM and SEM. Panels (A,C) show strain PA24 adhered to the small intestine fragment forming pedestals (attaching and effacing lesion; indicated by arrows), respectively, by SEM and TEM. Reduction in the presence of microvilli can also be observed. (B) DH10-B and (D) E2348/69 were, respectively, used as negative and positive control strains for adherence and pedestal formation. Bars, 1 μm.
