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OCT images of the buccal mucosa (b–f). The sample pictures represent the anterior (MP6) (b,c), the central (MP7) (d) and the posterior buccal region (MP8) (e,f). Exemplary HE stained histological cross sections depicting the buccal mucosa (a) ([44] modified). EP: epithelium, BM: basement membrane, LP: lamina propria; Arrows: epithelial surface alteration, Yellow dots: uneven surface profile. Scale bars: 200 .
