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C. difficile spores and toxin levels in fecal samples of mice in four groups. (A) Total C. difficile spore numbers; (B) C. difficile R20291 spore numbers; (C) Tcd A level; (D) Tcd B level. Comparisons were made between groups (CCUG37785 + R20291) or (R20291 + CCUG37785) and R20291. (Experiments were repeated 3 times, and representative data were shown. Data are present as “Mean±SD”. ∗, P < 0.05; ∗∗, P < 0.01; ∗∗∗, P < 0.001).
