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S-T maps (on the left) showing the effect produced by the serosal addition of NaHS (0.3 and 1 mM) on motor patterns observed in colonic segments. Detail of the diameter of the colon in the proximal (A) and mid (B) regions in control conditions and in the proximal (C) and mid (D) regions in the presence of NaHS (1 mM) (dotted lines in S-T maps). Note, on the right, that NaHS concentration-dependently inhibited RPMCs (large contractions) and increased the amplitude of ripples.
