JEB -- Shiels et al. 205 (23): 3631 Figure IG2

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Fig. 2. A representative recording of the inward Na⁺/Ca²⁺ exchanger (NCX) current (I_NCX) resulting from caffeine application in a trout atrial myocyte at 14°C. This current would be accompanied by a large contraction (not shown). The inset shows the time integral of the current that was used to calculate the Ca²⁺ content of the sarcoplasmic reticulum (SR) at the time that caffeine was applied.