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Expression of mucin 2 and mucin 5AC in colorectal carcinomas. A: Mucin (MUC)2 expression in normal colonic mucosa; B: MUC2 expression in cancer: level 0; C: MUC2 expression in cancer: level 4; D: MUC5AC expression in normal colonic mucosa; E: MUC5AC expression in cancer: level 1; F: MUC5AC expression in cancer: level 4 (immunohistochemical staining, × 10).
