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Figure 2: A keratin-filled epidermal invagination with rises a parakeratotic column the so-called cornoid lamella; it also showed loss of the granular layer, within the parakeratotic column (H and E, × 40)

Figure 2: A keratin-filled epidermal invagination with rises a parakeratotic column the so-called cornoid lamella; it also showed loss of the granular layer, within the parakeratotic column (H and E, × 40)