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Activation kinetics of hERG1a and hERG1b channels expressed in HEK cells. An envelope of tails protocol was used to measure the activation properties at +40 mV. (A) Representative current traces elicited by the protocol shown at the top corresponding to 5–500 ms of activation are shown. (B)The data were normalized to the maximum amplitude of the tail current and plotted against time. hERG1a (n = 10); hERG1b (n = 10). All data are shown as mean ± SEM.
