Electrophysiological and Pharmacological characterisation of the OAG-induced current in MCF-7 cell line. A) Typical current trace recorded during the current induced by 50 μM OAG. The holding potential was -40 mV and 400 ms voltage ramps were applied from -100 mV to +100 mV. The reversal potential (Erev) of the currents recorded was about 0 mV. B) Time course development of OAG-inward currents (measured at -100 mV) in a representative MCF-7 cell bathed in external control medium. C-D) 2-APB (50 and 100 μM) and La3+ (100 μM) effects on time course of OAG-induced current recorded at -100 mV. E) The extracellular perfusion of SK&F 96365 (10 μM) completely inhibited the current induced by OAG (50 μM).