Methods: LSAB immunohistochemical method was used to stain the tissue sections of normal oral mucosa,epithelial hyperplasia, epithelial dysplasia and oral squamous cell carcinomas.

• 方法： 用LSAB免疫组化染色方法对口腔正常粘膜、上皮单纯增生、上皮异常增生和口腔磷癌切片进行染色，光镜观察。