title: Alterations in acetylcholine, histamine and certain enzymes in peptic ulcer.
mesh_terms: D000109:Acetylcholine / Q000097:blood*; D000110:Acetylcholinesterase / Q000096:biosynthesis; D000328:Adult; D004299:Dopamine beta-Hydroxylase / Q000097:blood; D006632:Histamine / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008995:Monoamine Oxidase / Q000097:blood; D010437:Peptic Ulcer / Q000097:blood* / Q000201:enzymology
chemical_list: D006632:Histamine; D004299:Dopamine beta-Hydroxylase; D008995:Monoamine Oxidase; D000110:Acetylcholinesterase; D000109:Acetylcholine