The two-component mucous barrier; its activity in protecting the gastroduodenal mucosa against peptic ulceration.
D041981:Gastrointestinal Tract; D006801:Humans; D009092:Mucous Membrane; D009093:Mucus; D010437:Peptic Ulcer / Q000209:etiology*
GASTROINTESTINAL SYSTEM; PEPTIC ULCER/etiology and pathogenesis