The effects of acetylcholine and methacholine upon the human colon.
D000109:Acetylcholine / Q000494:pharmacology*; D003106:Colon / Q000187:drug effects*; D006801:Humans; D016210:Methacholine Chloride
D016210:Methacholine Chloride; D000109:Acetylcholine
ACETYLCHOLINE/effects; COLON/effect of drugs on; METHACHOLINE