Fig. 4. Effect of depletion of Ca²⁺ mitochondrial pools on tBHP-evoked Ca²⁺ release in pancreatic acinar cells. (A) Cells were perfused with 0.5 µmol l^-1 FCCP, followed by perfusion with 1 mmol l^-1 tBHP, in Ca²⁺-free medium. (B) Cells were perfused with 1 mmol l^-1 tBHP, followed by perfusion with 0.5 µmol l^-1 FCCP, in Ca²⁺-free medium. Traces are representative of 27 and 18 such cells taken from 7 and 6 different experiments, respectively.