Table 1. Primers for real-time PCR.

Genes	Sense (5′–3′)	Antisense (5′–3′)
β-Actin	ATGCCCCTCGTGCTGTTTTC	GCCTCATCTCCCACATAGGA
vegf	TCTCCTCCATCTGTCTGC	CAGGAGCATTTACAGGTG
flt1	AGGCTTTTGCAGGACAGAAA	TGTGATGGTGAGGTTCTGGA
flk1	GATGGAGATACACACCTTCAG	TGCGTACCGATGACACATTTC