Gastric mucosal competence.
D000818:Animals; D004381:Duodenal Ulcer / Q000503:physiopathology*; D005744:Gastric Acid / Q000378:metabolism*; D005753:Gastric Mucosa / Q000503:physiopathology*; D006801:Humans; D013276:Stomach Ulcer / Q000503:physiopathology*