title: Structural elements of H1- and H2-receptors of histamine.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006632:Histamine; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D011968:Receptors, Histamine / Q000502:physiology*; D011969:Receptors, Histamine H1 / Q000502:physiology*; D011970:Receptors, Histamine H2 / Q000502:physiology
chemical_list: D011968:Receptors, Histamine; D011969:Receptors, Histamine H1; D011970:Receptors, Histamine H2; D006632:Histamine