Objective To investigate the expression of CK14 and its significance in the occurrence,development and metastasis of non-small cell lung cancer(NSCLC).Methods A total of 110 NSCLC patients were involved in the study.The NSCLC cancerous tissues,the tissues adjacent to carcinoma and normal lung tissues of 110 patients and 12 patients were analyzed for CK14 expression by immunohistochemistry and Western blotting,respectively.The relationship between CK14 expression and clinical pathological parameters of NSCLC...