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mucosal and cutaneous, extensive | full epidermal with +/- subepidermal bullae, does not effect dermis | none or minimal except when ulcerated |
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mucocutaneous, ventral neck, proximal limbs, nose, footpad | full epidermal with numerous apoptotic keratinocytes and +/- subepidermal bullae | lymphohistiocytic, perivascular and interface |
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variable | coagulative necrosis extends into dermis | peripheral neutrophils and macrophages |