Table 1.

Oligonucleotide primers used in real-time PCR assay

Gene	Forward primer sequence	Reverse primer sequence
β-catenin	5′-GAGGAGATGTACATTCAGCAG-3′	5′-GTCTCCGACCTGGAAAAC-3′
TCF-4	5′-CTTTCCCTAGCTCCTTCTTC-3′	5′-CTACGATGGAAAGTGGACAT-3′
OPN	5′-GTGGGAAGGACAGTTATGAA-3′	5′-CTGACTTTGGAAAGTTCCTG-3′
GAPDH	5′-CAATGACCCCTTCATTGACC-3′	5′-GACAAGCTTCCCGTTCTCAG-3′