Table 1.

Primer sequences for qRT-PCR

Gene	Primer sequences
GAPDH	Forward:5′-GGGAAACCCATCACCATCTT-3′
	Reverse:5′-CCAGTAGACTCCACGACATACT-3′
COL2	Forward:5′-CAAGGAGAAGCTGGACAGAAA-3′
	Reverse:5′-CTTAGGACCAGTCACTCCAGTA-3′
AGG	Forward:5′-TGAAGGCAACTCTCGTCTTATT-3′
	Reverse:5′-GTCAGGGTCGTAAGGGATTATG-3′
SOX9	Forward:5′-GACGTGCAAGCTGGGAAAGT-3′
	Reverse:5′-CGGCAGGTATTGGTCAAACTC-3′

GAPDH glyceraldehyde 3-phosphate dehydrogenase, COL2 type II collagen, AGG aggrecan, SOX9 sex-determining region Y-box 9