Table 2.

Primer sequences of chondrogenesis-related genes used for qRT-PCR.

Gene		Sequence
GAPDH	Forward primer	5′CTGGAAGATGGTGATGG3′
	Reverse primer	5′GATTTGGTCGTATTGGGCG3′
Aggrecan	Forward primer	5′TCGCAAGTCCCTTCCACATC3′
	Reverse primer	5′TCAAGGCGTCCTGAAGTGTC3′
Collagen type II	Forward primer	5′GCTGGTGCACAAGGTCCTAT3′
	Reverse primer	5′AGGGCCAGAAGTACCCTGAT3′
Sox9	Forward primer	5′CCAGCAAGAACAAGCCACAC3′
	Reverse primer	5′CTTGCCCAGAGTCTTGCTGA3′

RT-PCR: reverse transcription polymerase chain reaction; GAPDH: glyceraldehyde 3-phosphate dehydrogenase.