Methods Immunohistochemical method was used to examine the expressions of P16, P53 and SMAD4 protein in 30 pancreatic carcinoma tissues and 10 normal pancreatic tissues.

• 方法采用免疫组织化学方法对30例胰腺癌组织和10例正常胰腺组织中P16、P53和SMAD4蛋白进行检测。