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Fig. 10. Effect of potential inhibitors on [14C]Ox2–/Cl exchange in hepatopancreatic BBMV. Vesicles were preloaded with 100 mmol l–1 TMA-gluconate, 100 mmol l–1 KCl and 50 µmol l–1 valinomycin. Incubation media contained 0.1 mmol l–1 [14C]oxalate, 100 mmol l–1 TMA-gluconate, 100 mmol l–1 K-gluconate and either 1 mmol l–1 SITS, DIDS, bumetanide or furosemide. Control incubation media contained 190 mmol l–1 TMA-gluconate and 100 mmol l–1 K-gluconate. All media contained 40 mmol l–1 Hepes-Tris at pH 7.0.