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Stages of wound healing process: (a) physiological skin, (b) damaged skin, (c) skin undergoing wound healing process and (d) healed skin. Histological image, hematoxylin–eosin, 10×, bar: 20 µm, the red arrows highlight the named stages. Reproduction from: Dpt. Clinical–Surgical, Diagnostic and Pediatric Sciences, University of Pavia.
