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Figure 2: One section showed typical findings of actinic keratosis featured by hyperkeratosis, parakeratosis and irregularly proliferation of atypical keratinocytes in the lower epidermis (a) (H and E, 4×), (b) (H and E, 40×)

Figure 2: One section showed typical findings of actinic keratosis featured by hyperkeratosis, parakeratosis and irregularly proliferation of atypical keratinocytes in the lower epidermis (a) (H and E, 4×), (b) (H and E, 40×)