An inhibitory effect of acetycholine on the response of the guineapig ileum to histamine.
D000109:Acetylcholine / Q000494:pharmacology*; D001285:Atropine; D006168:Guinea Pigs; D006632:Histamine; D018494:Histamine Agents; D007082:Ileum / Q000187:drug effects*; D009119:Muscle Contraction
D018494:Histamine Agents; D001285:Atropine; D006632:Histamine; D000109:Acetylcholine
ACETYLCHOLINE/effects; HISTAMINE/effects; ILEUM/effect of drugs on