Differentiation of H1- and H2-receptors mediating positive chrono- and inotropic responses to histamine on atrial preparations of the guinea-pig.
D000818:Animals; D004305:Dose-Response Relationship, Drug; D004558:Electric Stimulation; D006168:Guinea Pigs; D006325:Heart Atria / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects*; D006632:Histamine / Q000494:pharmacology*; D006634:Histamine H1 Antagonists / Q000494:pharmacology; D007093:Imidazoles / Q000494:pharmacology; D066298:In Vitro Techniques; D008297:Male; D011398:Promethazine / Q000494:pharmacology; D011955:Receptors, Drug; D013268:Stimulation, Chemical; D013890:Thiourea / Q000494:pharmacology
D006634:Histamine H1 Antagonists; D007093:Imidazoles; D011955:Receptors, Drug; D006632:Histamine; D011398:Promethazine; D013890:Thiourea