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(A) Ulcer (arrows) at the SOA in a male mouse exposed to 75 mg/kg pyrogallol (H&E, 2.5×). (B) Higher magnification of Figure 2A. Note complete loss of the epidermis (long arrows) with superficial necrosis, diffuse inflammation and pigment within the dermis. The adjacent intact epidermis is hyperplastic (short arrows) (H&E, 10×).
