Fig. 5. Effect of depletion of mitochondrial and non-mitochondrial intracellular Ca²⁺ stores on tBHP-evoked Ca²⁺ release. Pancreatic acinar cells were perfused with 0.5 µmol l^-1 FCCP plus 1 µmol l^-1 thapsigargin (TPS), followed by 1 mmol l^-1 tBHP in a Ca²⁺-free medium. Trace is representative of 22 such cells taken from 5 experiments.