title: The significance of a fast exchanging superficial calcium fraction for the regulation of contractile force in heart muscle.
mesh_terms: D000818:Animals; D016275:Atrial Function; D002118:Calcium / Q000378:metabolism*; D002132:Calcium Radioisotopes; D006168:Guinea Pigs; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D007700:Kinetics; D009206:Myocardium / Q000378:metabolism*; D010042:Ouabain / Q000494:pharmacology; D010424:Pentobarbital / Q000494:pharmacology; D013997:Time Factors
chemical_list: D002132:Calcium Radioisotopes; D010042:Ouabain; D010424:Pentobarbital; D002118:Calcium