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A: Section of colon in normal control showing normal structure and architecture (immunohistochemistry, 40 x); B: Section of colon in DNCB control showing extensive NFκ-B (brown) expression in tissue (immunohistochemistry, 40 x); C: Section of colon in sulfasalazine treated group showing limited NFκ-B (brown) expression (immunohistochemistry, 40 x); D: Section of colon in NCB-02 treated group showing minimal NFκ-B (brown) expression (immunohistochemistry, 40 x).
