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Mean concentrations of SQ (A), DHPS (B) and sulfide (C) at 0, 3, 24 and 48 h in substrate control with SQ, simplified human intestinal microbiota (SIHUMI), SIHUMI with SQ, SIHUMI and Bilophila wadsworthia, and SIHUMI and Bilophila wadsworthia with SQ. Error is SEM. P calculated according to Kruskal–Wallis tests with post hoc Dunn tests. Differing letters depict significant differences between groups.
