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. 2016 Apr 25;17:17. doi: 10.1186/s12868-016-0252-0

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© Delgado et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Ca²⁺ dependence of a Ca²⁺-activated Cl⁻ channel from toad olfactory cilia. a Isolated olfactory receptor neuron under DIC optics; s, soma; d, dendrite; k, dendritic knob; c, cilia; p, patch-clamp pipette. b Cl⁻ currents from an inside-out excised ciliary patch at different Ca²⁺ concentrations (V_m = −30 mV, V_bath − V_pipette); whole-point amplitude histograms are shown by each trace. c Plot of nPo vs. [Ca²⁺] (nPo: number of channels times the open probability; see “Methods” section). The data point are fit with a Hill function; K_0.5 = 0.38 µM, n = 2.7 (N = 4)