The slow phase of repolarization in rat right ventricular trabeculae is likely driven by an inward current from Na+-Ca2+ exchange, as evidenced by its sensitivity to extracellular sodium and calcium concentrations.
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Supports NCX-driven repolarization in rat ventricle; leaves open translation to human electrophysiology and arrhythmias.
Schouten et al. (1985) studied this question.
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