Method Forty-two cases of malignant melanoma in the head and neck and thirty cases junctional nevus were stained with PTEN protein rabbit antibody by SABC immu-nohistochemical method.

• 材料与方法应用免疫组织化学SABC法，用PTEN兔抗人多克隆抗体检测42例头颈部恶性黑色素瘤黑组织和30例头颈部交界痣组织中PTEN蛋白的表达，同时结合临床病理进行分析。