Table 1. Primers used in Real-Time Quantitative Polymerase Chain Reaction.

Gene Name	Genbank_ID	Primer Sequence	Product length
β-actin	NM_007393.3	Forward: ACGTTGACATCCGTAAAGACC Reverse: AGCCAGAGCAGTAATCTCC	107bp
PHD2	NM_053207.2	Forward: CCACTGGCACTCAACTAACTCA Reverse:CCGAGTTCATTTAGTGCCCGTCA	114bp
HIF-1α	NM_010431.2	Forward: AAGCCCTCCAAGTATGAGCAC Reverse: GCCACTGTATGCTGATGCCTTA	214bp
VEGFa	NM_001025250.3	Forward: GAACCAGACCTCTCACCGGAA Reverse: GACCCAAAGTGCTCCTCGAAG	136bp