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B-011-02 KIR2.1 CHANNELS IN A NOVEL SARCOPLASMIC RETICULUM MICRODOMAIN CONTROL INTRACELLULAR CA2+ DYNAMICS

      The strong inward rectifier K+ channel, Kir2.1, is known to localize at the sarcolemma to control the resting potential and the final phase of ventricular repolarization. K+ channels have been suggested to contribute countercurrent to calcium flux across the sarcoplasmic reticulum (SR) membrane, but their identity and function remain controversial.
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