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. 2002 Oct;120(4):567–579. doi: 10.1085/jgp.20028665

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Copyright © 2002, The Rockefeller University Press

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Figure 6. — Caffeine-induced calcium release at different pH_i. (A) The size of the transient change in V_Ca occurring within 60 s of the start of 25 applications of 10 mM caffeine onto three different cells is plotted against the pH_i at the time of application. (B) The size of the transient change in V_Ca plotted against the V_Ca at the time of application. (C) The initial V_Ca and pH_i when the caffeine applications were made. Data from three experiments in which caffeine was applied a total of 25 times.