Fig. 1.

Anti-CD1a-immunostained microphotographs of Langerhans cells (LCs) in odontogenic keratocyst (OKC) specimens. (A) An OKC without inflammation showing none of LCs in both the thin lining epithelium and subepithelial connective tissue. (B) An OKC with mild inflammation exhibiting few LCs in the lining epithelium. (C) An OKC with moderate inflammation demonstrating a few LCs in both the lining epithelium and the moderately-inflamed subepithelial connective tissue. (D) An OKC with severe inflammation showing more LCs in both the lining epithelium and the severely-inflamed subepithelial connective tissue. (Original magnification; A, B, C and D: 12.6×).