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Fig. 1 | BMC Cancer

Fig. 1

From: Synchronous anal canal carcinoma in a heterosexual couple

Fig. 1

The biopsy of the anal lesion of the female revealed a well-differentiated squamous cell carcinoma (a), and the male had a poorly differentiated squamous cell carcinoma (b) with a prominent lymphoid infiltrate (*), hematoxylin and eosin staining. Both lesions (c, d) demonstrate strong and diffuse p16 immunoreactivity (brown) and there is no p16 expression in the adjacent rectal glands (*). Magnification X 200

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