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Fig. 3. Effects of bafilomycin A1 and Sch-28080 on acidification current in a representative experiment. The bladder was maintained in an Ussing-type chamber and conditions were as described for Fig. 1. Baf, bafilomycin A1 (5x10-9 mol l-1, mucosal); Sch, Sch-28080 (3x10-5 mol l-1, mucosal) were introduced where indicated (arrows).