title: An analysis of the inotropic effect of calcium and manganese ions on guinea-pig atrium.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D007700:Kinetics; D008345:Manganese / Q000494:pharmacology*; D008433:Mathematics; D013268:Stimulation, Chemical; D013997:Time Factors
chemical_list: D008345:Manganese; D002118:Calcium