title: Sodium requirement for effects of ouabain on contraction of isolated guinea pig atria.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002110:Caffeine / Q000494:pharmacology; D003971:Diastole / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D006168:Guinea Pigs; D006325:Heart Atria / Q000187:drug effects; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects*; D010042:Ouabain / Q000494:pharmacology*; D012964:Sodium / Q000172:deficiency / Q000378:metabolism*; D013599:Systole / Q000187:drug effects; D013997:Time Factors
chemical_list: D002110:Caffeine; D010042:Ouabain; D012964:Sodium