title: The role of histamine H1- AND H2-receptors in the guinea pig heart.
mesh_terms: D000818:Animals; D003326:Coronary Circulation / Q000187:drug effects; D000242:Cyclic AMP / Q000378:metabolism; D004562:Electrocardiography; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism; D011968:Receptors, Histamine / Q000502:physiology*; D011969:Receptors, Histamine H1 / Q000187:drug effects / Q000502:physiology*; D011970:Receptors, Histamine H2 / Q000187:drug effects / Q000502:physiology*
chemical_list: D011968:Receptors, Histamine; D011969:Receptors, Histamine H1; D011970:Receptors, Histamine H2; D000242:Cyclic AMP