The oesophagus.
D000818:Animals; D004947:Esophagus / Q000187:drug effects / Q000502:physiology / Q000503:physiopathology; D005755:Gastrins / Q000494:pharmacology; D005764:Gastroesophageal Reflux / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology; D006548:Hernia, Diaphragmatic / Q000150:complications; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008365:Manometry; D010455:Peptides / Q000494:pharmacology; D011859:Radiography
D005755:Gastrins; D010455:Peptides