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Acidification-mediated reduction of Kv1.5 current magnitude in the presence of 3 mM K+. In both A and B, three superimposed currents are shown, one recorded at pH 6.8 and two recorded at pH 7.3, one before and one after the current recorded at pH 6.8. (A) Currents recorded at 0 mV. (B) Currents recorded at +100 mV. Acidification from pH 7.3 to 6.8 reduced currents by 2.3 ± 0.3% (n = 3).
