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A representative graph of kinetics of Na-alanine co-transport in control and SIN-1-treated IEC-18 cells. Na-dependent 3H-alanine uptake is shown as a function of increasing concentrations of extracellular alanine at 30 s. As the concentration of extravesicular alanine was increased, uptake of 3H-alanine was stimulated and subsequently became saturated in both the experimental conditions.
