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Concentration–response curves to ADPβS before and after atropine (1 μM; n=6) or indomethacin (10 μM; n=6), TTX (1 μM, n=5) or L-NAME (100 μM; n=6) in longitudinal muscle of mouse distal colon. Data are means±s.e.m. and are expressed in absolute values. The values for the control curves are the means of the control data obtained before each treatment. *P<0.05 when the concentration–response curves were compared with those obtained in the respective control condition.
