title: [Influence of divalent Mn ions on the positive inotropic effect of some drugs in isolated guinea pig atria].
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology; D002297:Cardanolides / Q000494:pharmacology*; D004558:Electric Stimulation; D004837:Epinephrine / Q000037:antagonists & inhibitors*; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects* / Q000502:physiology; D006325:Heart Atria; D066298:In Vitro Techniques; D008345:Manganese / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects; D013268:Stimulation, Chemical; D013806:Theophylline / Q000037:antagonists & inhibitors*
chemical_list: D002297:Cardanolides; D008345:Manganese; D013806:Theophylline; D002118:Calcium; D004837:Epinephrine
vernacular_title: Uber den Einfluss von Mn+2-Ionen auf die positiv inotrope Wirkung einiger Pharmaka an isolierten Meerschweinchenvorhöfen.