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  • Title: Excitation-contraction coupling in the myocardium of hibernating chipmunks.
    Author: Kondo N.
    Journal: Experientia; 1986 Dec 01; 42(11-12):1220-2. PubMed ID: 3780943.
    Abstract:
    In the myocardium of nonhibernating chipmunks, replacing external Ca by Sr markedly prolongs the action potential plateau with an increase in contraction, while in preparations from hibernating animals this procedure inhibits both responses. Pretreatment with 4-aminopyridine causes a prolongation of the action potential plateau by Sr in hibernating animals.
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