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Fig. 7. Effect of Ca2+ current on K+ current. (A) Superposition of two current traces associated with depolarisations to +30 mV with a 200 ms interval. The pulse duration was 25 ms. (B) K+ current component obtained by subtracting the second current record from the first current record in A. The bath solution was 3Ca-ASW containing 4 µmol l–1 TTX, and the pipette solution was K-asp. Cell membrane capacitance (Cm)=110.4 pF.