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Adherence capacity of O157 in the mouse intestinal tract. (a-c) Evaluation of the adherence capacity of O157 WT, ΔOI-9 mutant, ΔovrB mutant, and ΔovrB complementary strain in distal colon of mice at 6 h (a), 2 d (b), and 4 d (c) post-infection. Horizontal lines represent the geometric means. Statistical significance was assessed with the Mann-Whitney rank-sum test.
