title: THE GASTRIC MUCOSA IN RADIOLOGICALLY NEGATIVE ACUTE GASTROINTESTINAL BLEEDING.
mesh_terms: D001241:Aspirin; D001706:Biopsy; D004381:Duodenal Ulcer; D005745:Gastric Acidity Determination; D005753:Gastric Mucosa; D005756:Gastritis; D006471:Gastrointestinal Hemorrhage; D006801:Humans; D010336:Pathology; D013276:Stomach Ulcer; D014116:Toxicology
chemical_list: D001241:Aspirin
keywords: ASPIRIN; BIOPSY; DUODENAL ULCER; GASTRIC ACIDITY DETERMINATION; GASTRIC MUCOSA; GASTRITIS; HEMORRHAGE, GASTROINTESTINAL; PATHOLOGY; STOMACH ULCER; TOXICOLOGIC REPORT