Objective To investigate the expressions of KAI1 gene,tissue inhibitor 1 of metalloproteinase( TIMP-1) and matrix metalloproteinase 9( MMP-9) in non-small cell lung cancer( NSCLC) and their correlations with clinicopathologic features of NSCLC. Methods The expressions of KAI1,TIMP-1 and MMP-9 in 73 specimens of NSCLC tissues,51 specimens of corresponding adjacent tissues and 13 specimens of non-cancerous lung tissue were determined by immunohistochemistry. Their correlations with clinicopathologic features ...