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(A) Representative current clamp recordings of action potential induced by depolarizing current pulses (500 ms; 1 nA) from neurons before (control) and after echinacoside (20 µM) application for 10 min. (B) Summary data (n=7) showing mean values of action potential frequency in the absence (control) and presence of 20 µM echinacoside. ***p<0.001 vs. control group.
