This model shows the various stages of gastritis, gastric ulcer from slight to gastric perforation. Gastric section with esophageal and duodenal attached shows the following pathological changes: Erythema shape erosive gastritis; gastritis; hemorrhagic gastritis; scar healing hypertrophic gastritis atrophic gastritis; gastric ulcer; bleeding; perforated gastric ulcer; gastric enlarged model shows: the health of acute gastritis; gastric mucosa; erosion gastritis, mucosal defect of peptic ulcer bleeding (muscularis mucosa damage); perforated gastric ulcer (gastric layer are arranged on the base of damaged).
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