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Sensitivity of baseline ORd model to select conductances. (A) The APD of the baseline model has a strong sensitivity to the conductance of IKr. (B) The calcium transient (quantified here as systolic [Ca2+]i) depends sensitively on GCaL, GNCX, and GNaK. (C) The level of [Na+]i depends mainly on GNaK. Conductances were varied by ±20% (light blue/red) and ±50% (dark blue/red) of baseline values.
