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. 2007 Feb 2;12(1):64–78. doi: 10.1111/j.1542-474X.2007.00140.x

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PMC Copyright notice

Action potential waveforms and underlying ionic currents in human atrial (left) and ventricular (right) myocytes. I_to= transient outward current; I_Kur= ultrarapid delayed rectifierpotassium current; I_Kr= rapid delayed rectifierpotassium current; I_Ks= slow delayed rectifierpotassium current; I_K1= inward rectifierpotassium current; I_K,ACh= acetylcholine‐sensitive potassium current; I_K(ATP)= ATP‐dependent potassium current. Structural channel protein components are given for all currents. Cartoons show schematic current profileof the corresponding potassium current.