On specificity of histamine receptors in the heart.
D000818:Animals; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006632:Histamine / Q000494:pharmacology*; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009206:Myocardium; D011398:Promethazine / Q000494:pharmacology; D011817:Rabbits; D011955:Receptors, Drug / Q000187:drug effects*; D012110:Reserpine / Q000494:pharmacology; D012701:Serotonin / Q000494:pharmacology
D011955:Receptors, Drug; D012701:Serotonin; D006632:Histamine; D012110:Reserpine; D011398:Promethazine