A Y Nishimoto

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The influence of external Na+ and Ca2+ on the efflux of Ca2+ from highly purified sarcolemmal vesicles isolated from dog ventricles is examined. Na+-Ca2+ exchange is used to initially load the vesicles with Ca2+. Ca2+-induced Ca2+ efflux is activated if a monovalent cation is also present in the efflux medium. The order of potency of monovalent cations in(More)
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