Secretory function of Barrett's epithelium.
D000368:Aged; D004935:Esophageal Diseases / Q000473:pathology*; D004942:Esophagitis, Peptic / Q000473:pathology*; D004943:Esophagogastric Junction / Q000473:pathology*; D006548:Hernia, Diaphragmatic / Q000473:pathology*; D006801:Humans; D008297:Male