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. 2008 Jul;132(1):29–50. doi: 10.1085/jgp.200709865

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© 2008 Yaradanakul et al.

This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.jgp.org/misc/terms.shtml). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 3.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/3.0/).

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Figure 3. — Dependence of BHK cell capacitance responses on the extracellular Ca concentration and exchange current density (0 mV, 35°C). (A) Typical current, capacitance, and conductance records during application of 0.1 mM free Ca together with 40 mM Na, thereby limiting the maximal free cytoplasmic Ca concentration to 0.1 mM. (B) Typical current, capacitance, and conductance records during application of 10 μM free Ca together with 40 mM Na, thereby limiting the maximal free cytoplasmic Ca concentration to 10 μM. (C) Maximal rate of capacitance increase as fractional increase of total cell capacitance per second (dCap/dt/Cap) in dependence on the applied extracellular free Ca. (D) Maximal fractional rate of capacitance rise in dependence on peak exchange current density.