Table 1. The primer sequences for real-time PCR.

Genes	GenBank numbers	Primer sequence	Product size (bp)
β-Actin	NM-031144.2	Forward 5′-GGAGATTACTGCCCTGGCTCTA-3′ Reverse 5′-GACTCATCGTACTCCTGCTTGCTG-3′	150
IGF-I	NM 001082478.1	Forward 5′-GCACTCTGCTTGCTCACCTTTA-3′ Reverse 5′-TCCGAATGCTGGAGCCATA-3′	148
IGF-IR	NM 052807.2	Forward 5′-GGTCTCTAAGGCCAGAGGTGGA-3′ Reverse 5′-GACGAACTTGTTGGCATTGAGGTA-3′	122