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p53 protein expression. (A) H pylori positive chronic gastritis: sparse low positivity for p53 protein. (B) H pylori positive chronic gastritis with intestinal metaplasia: positivity for p53 protein in areas of intestinal metaplasia. (C) Gastric cancer: high positivity for p53 protein. Original magnifications: A, × 250; B, × 250; C, × 100.
