Fig. 6.
Correlation between mRNA expression value and clinical stage in lung squamous cell carcinoma (SQ: A) and in lung adenocarcinoma (AD: B). In SQ, the expression of CK6 and CK14 mRNA was significantly higher in the stage IV samples than in the lower stage samples (P=0.02, 0.04, respectively). While CK7 and CK18 mRNA expression were lower in the stage I AD samples than in the samples of other stages, no correlation between mRNA expression and clinical stage was found in AD.