Bioassay of endogenous acetylcholine released by acetylcholine releasers.
D000109:Acetylcholine / Q000032:analysis*; D000818:Animals; D001681:Biological Assay; D003080:Cold Temperature; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D008722:Methods; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D009538:Nicotine / Q000494:pharmacology
D009538:Nicotine; D000109:Acetylcholine