Figure 1. qRT-PCR detection results about the relative mRNA expressions of CK7 and CK20 in lung cancer and paracancerous normal tissues.

(A) CK7 relative mRNA expression in lung cancer tissue was significantly higher than that in paracancerous normal tissues. (B) CK20 relative mRNA expression was also higher in lung cancer tissue when compared with that in paracancerous normal tissue. *, P<0.05, the difference between groups was significant.