title: Proceedings: Influence of tetrodotoxin on the contractile response of the small intestine of guinea-pig produced by picric acid and acetylcholine.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007421:Intestine, Small / Q000187:drug effects*; D009119:Muscle Contraction / Q000187:drug effects; D010851:Picrates / Q000494:pharmacology*; D013779:Tetrodotoxin / Q000494:pharmacology*
chemical_list: D010851:Picrates; D013779:Tetrodotoxin; D000109:Acetylcholine