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Exemplary histological images of the three membranes (A–C,E–G,I–K,M–O, double arrows) and the sham operation (D,H,L,P) within the subcutaneous connective tissue (CT) at day 10, 30, 60, and 90 post implantationem. SP = subcutaneous pocket of the sham operation. BM = bovine membrane, JM = Jason® membrane, BG = Bio-Gide® membrane, SO = sham operation (H&E-stainings, 40× magnifications, scalebars = 100 µm).
