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Fig. 2. Effect of luminal 3H-L-histidine concentration
(150 nmol l1 µmol l1) on the
rate of mucosal-to-serosal transmural transport measured in the absence of
mucosal zinc over 30 min time intervals at each luminal amino acid
concentration. Unidirectional fluxes were calculated from regression slopes
determined over this time interval for each amino acid concentration. Values
displayed are means ± S.E.M. of 3 replicates per
concentration.