title: Structure elements of histamine H1- and H2-receptors [proceedings].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D011968:Receptors, Histamine; D011969:Receptors, Histamine H1; D011970:Receptors, Histamine H2; D013329:Structure-Activity Relationship
chemical_list: D011968:Receptors, Histamine; D011969:Receptors, Histamine H1; D011970:Receptors, Histamine H2