title: Tetrodotoxin and the lower esophageal sphincter.
mesh_terms: D000818:Animals; D004943:Esophagogastric Junction / Q000187:drug effects* / Q000294:innervation; D009433:Neural Inhibition / Q000187:drug effects*; D009893:Opossums; D013779:Tetrodotoxin / Q000494:pharmacology*
chemical_list: D013779:Tetrodotoxin