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CYP26A1 expression in cervical squamous intraepithelial neoplasia. Representative images of hematoxylin-eosin staining (A, C, E, G, and I) and immunohistochemistry of CYP26A1 (B, D, F, H, and J). CYP26A1 expression was evaluated in non-neoplastic (normal) squamous epithelium (A, B), epithelium with mild (C, D), moderate (E, F), and severe (G, J) dysplasia, as well as squamous cell carcinoma in situ (I, J). Original magnification: ×40 (A, B, C, D, and E), ×100 (F, G, H, I, and J).
