title: The force of contraction of isolated papillary muscle: a study of the interaction of its determining factors.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology; D002417:Cattle; D006632:Histamine / Q000494:pharmacology; D066298:In Vitro Techniques; D008433:Mathematics; D009200:Myocardial Contraction / Q000187:drug effects; D009638:Norepinephrine / Q000494:pharmacology; D010042:Ouabain / Q000494:pharmacology; D010424:Pentobarbital / Q000494:pharmacology; D011817:Rabbits; D013268:Stimulation, Chemical
chemical_list: D010042:Ouabain; D006632:Histamine; D010424:Pentobarbital; D002118:Calcium; D009638:Norepinephrine