title: Histamine and antihistamine substances.
mesh_terms: D018926:Anti-Allergic Agents; D006632:Histamine; D006634:Histamine H1 Antagonists; D006801:Humans
chemical_list: D018926:Anti-Allergic Agents; D006634:Histamine H1 Antagonists; D006632:Histamine
keywords: HISTAMINE