title: Letter: Comment on comparative approach.
mesh_terms: D000937:Antigen-Antibody Reactions; D001151:Arsenic; D011232:Chemical Precipitation; D006241:Haptens; D008956:Models, Chemical; D009994:Osmolar Concentration; D011789:Quantum Theory
chemical_list: D006241:Haptens; D001151:Arsenic