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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Prog Biophys Mol Biol. 2008 May 29;98(1):24–37. doi: 10.1016/j.pbiomolbio.2008.05.002

Figure 1.

Figure 1

Variations in ionic concentrations over 10 minutes of constant pacing at cycle lengths (CLs) of 1000, 500, and 350 ms for the NM. Note that different scales are used for each concentration and each CL to indicate ongoing adjustments to concentrations appropriately.