Abstract

1. 1. Addition of d-glucose, d-galactose, or d-3-O-methyl glucose to the mucosal bathing medium stimulated rapid sustained increases in transmural potential difference (serosa negative) and short-circuit current. 2. 2. Addition of phlorizin to the mucosal bathing medium partially inhibited the d-glucose stimulation of transmural potential difference and short-circuit current. 3. 3. The major portion of the sugar-induced short-circuit current was carried by a net active sulfate transfer from mucosa to serosa.

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