Research Article

The Role of EGFR/PI3K/Akt/cyclinD1 Signaling Pathway in Acquired Middle Ear Cholesteatoma

Figure 1

HE staining of human cholesteatoma (a) and normal EAC skin (b). In the figure, the keratin debris (K), matrix epithelium (M), and perimatrix subepithelial tissue (P) of cholesteatoma and the epithelium (EP) and subepithelial tissue (ST) of normal EAC skin are indicated. Original magnification: ×200.