title: Lower esophageal sphincter and the gastroesophageal antireflux mechanism.
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D001655:Bile Reflux / Q000503:physiopathology; D004285:Dogs; D004943:Esophagogastric Junction / Q000502:physiology*; D005260:Female; D005764:Gastroesophageal Reflux / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged