The pathogenesis of duodenal and gastric ulcers.
D000818:Animals; D001001:Anura; D004285:Dogs; D004381:Duodenal Ulcer / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D005750:Gastric Juice; D005753:Gastric Mucosa / Q000473:pathology; D006801:Humans; D013276:Stomach Ulcer / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D013552:Swine