title: A dual effect of acetylcholine on gastropod smooth muscle preparations.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D008974:Mollusca / Q000502:physiology*; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology*; D011950:Receptors, Cholinergic / Q000502:physiology
chemical_list: D011950:Receptors, Cholinergic; D000109:Acetylcholine