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(A) An artificial circumferential mucosal defect (4 cm in length); (B) a harvested epidermal cell sheet; (C) the polyvinylidene difluoride support membrane with an attached autologous epidermal cell sheet was grasped by using endoscopic forceps; (D) an epidermal cell sheet that was endoscopically transplanted to the center of an ulceration without sutures. [Reprinted with permission from (15), Copyright © 2014 Elsevier. All rights reserved].
