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Inflammation, external ear canal; rabbit. The superficial epidermis (asterisk) is expanded by numerous heterophils forming pustules. At this low magnification, the heterophils appear as hemorrhage. The deeper layers of the epidermis (double arrow) are expanded by intercellular edema. The dermis is expanded by edema and heterophilic infiltrates. The bone below the dermis at the left of the image is the bony collar of the external ear canal as it approaches the tympanic membrane.
