title: Tautomerism and the receptor action of histamine: a mechanistic model.
mesh_terms: D006632:Histamine / Q000494:pharmacology*; D007536:Isomerism; D008954:Models, Biological; D011955:Receptors, Drug / Q000187:drug effects*; D013329:Structure-Activity Relationship
chemical_list: D011955:Receptors, Drug; D006632:Histamine