Parallel bioassay as a method of identifying acetylcholine.
D000109:Acetylcholine / Q000032:analysis*; D000818:Animals; D001001:Anura; D001681:Biological Assay; D002794:Choline / Q000032:analysis*; D006168:Guinea Pigs; D007082:Ileum / Q000378:metabolism; D009132:Muscles / Q000378:metabolism
D002794:Choline; D000109:Acetylcholine