To study the effect of chitosan on delayed outward potassium current(IK) in single ventricular myocytes of guinea pig and investigate its antiarrhythmic mechanism from ion channel view.

研究壳聚糖对豚鼠单一心室肌细胞延迟外向钾电流（I_k）的作用，从离子通道角度初步探讨其作用机理。

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AIM: to evaluate the effect of captopril on action potential duration and outward delayed rectification potassium current (Ik).

目的：探讨卡托普利对豚鼠心肌细胞动作电位间期及延迟整流钾电流的作用。

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