The effects of potassium on the positive inotropic action of ouabain.
D000818:Animals; D005110:Extracellular Space / Q000378:metabolism*; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D010042:Ouabain / Q000494:pharmacology*; D011188:Potassium / Q000378:metabolism*
D010042:Ouabain; D011188:Potassium