Figure 14. . K+ dependence of inward current relaxation in the presence of extracellular HEP or piperazine. Intra- and extracellular solutions were buffered with 10 mM phosphate. The extracellular solution contained 3 μM HEP (A and B) or 0.3 μM piperazine (C and D), and either 100 mM K+ (A and C) or 20 mM K+ (B and D). (E) The ratio of currents at the end and the beginning of voltage pulses (Iend/Ibgn) is plotted against membrane voltage. The data corresponding to A–D are labeled a–d, respectively. All data points are mean ± SEM (n = 5).
Image published in: Guo D and Lu Z (2002)
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