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Figure 1. Immunohistochemical analysis of KGFR in gingival tissue. The brown enzyme reaction product indicates the presence of KGFR in gingival tissue. (A) Section of normal gingiva showing the presence of KGFR in the spinous and granular cell layers. Note the absence of KGFR in the basal and cornified cell layers. (B) GH tissue, in which KGFR is seen in the basal as well as the spinous and granular layers of the epithelium, although not in the cornified cell layer. Note the relatively higher staining intensity in the GH section (original magnification, 500x).
