Fig. 2. Mobilisation of Ca²⁺ in response to agonists in isolated rat pancreatic acinar cells pretreated with tBHP. Cells were initially perfused with 1 mmol l^-1 tBHP followed by 1 nmol l^-1 CCK-8 (A) or 1 µmol l^-1 thapsigargin (TPS) (B) in Ca²⁺-free medium. Traces are representative of 32 and 26 such cells taken from 12 and 10 different experiments, respectively.