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(A) Ca transient and AP clamp during pacing for one beat with an initial SR load of 1100 μM. (B) Shown here is a computational line scan of the dyadic junction concentration at locations (a) and (b) within the atrial cell. The bottom trace plots the line scan for the spatial average cav. (C) Shown here is a computational 2D image of dyadic junction Ca concentration. The image shown is 20 ms after the AP upstroke. To see this figure in color, go online.
