Evidence for two K+ currents activated upon hyperpolarization ofParamecium tetraurelia

Abstract

Hyperpolarization of voltage-clampedParamecium tetraurelia in K+ solutions elicits a complex of Ca2+ and K+ currents. The tail current that accompanies a return to holding potential (−40 mV) contains two K+ components. The tail current elicited by a step to −110 mV of ≥50-msec duration contains fast-decaying (τ≈3.5 msec) and slow-decaying (τ≈20 msec… (More)
DOI: 10.1007/BF01869104

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