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A: Tongue SCC of XPA−/−p53+/− mice. B: Moderate epithelial dysplasia of tongue in XPA−/−p53−/− mice. C: No evidence of neoplastic changes in p53+/− tongue. H&E staining. D: p53 immunohistochemistry in tongue SCC of XPA−/−p53+/− mice. Hematoxylin counterstain. Original magnifications: ×20 (A), ×100 (B), ×40 (C), and ×200 (D).
