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The action potential shape and intracellular calcium transient for all possible ion channel maximum conductance variations. The x-axis is time in milliseconds for all the panels. For (A,B), the y-axis is the membrane potential in millivolt, and, for (C,D), it is the intracellular calcium concentration in micromolar. The black solid line represents a case with normal maximum conductance for each ion channel (set to its 100% value). The vertical dashed line indicates 300 ms.
