Figure 7

Immunohistochemical detection of KGF, KGFR, and Ki-67 in serial paraffin sections of middle ear cholesteatoma. A, KGF-positive cells in the stroma. B, KGFR-positive cells in the basal, spinous, and granular layers in the epithelium. C, Ki-67-positive cells in the basal and spinous layers. Arrows = positive cells. Magnification, × 350.