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Fig. 3. result of histopathological examination, including hematoxylin and eosin (H&E) and periodic acid–Schiff (PAS) staining, shows hyperplasia with marked surface parakeratosis, as well as wide elongation of the epidermal rete pegs and acanthosis. Immunohistochemical staining for CD68 shows positive findings in foam cells below the epithelium. The specimen was stained with H&E (A: ×40 and B: ×100), PAS (C: ×40 and D: ×100), and anti-CD68 (E: ×40 and F: ×100).
Oral Biol Res 2021;45:150~155 https://doi.org/10.21851/obr.45.03.202109.150
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