Table 1.

The primer sequences used for RT-qPCR

RNA	Primer sequence (5′-3′)	Length
β-actin	Forward: 5′-ATCGTGCGTGACATTAAGG-3′	478
	Reverse: 5′-GGCCGGACTCGTCATACTCC-3′
Aggrecan	Forward: 5′-CACTGTTACCGCCACTTCCC-3′	300
	Reverse: 5′-GACATCGTTCCACTCGCCCT-3′
Collagen II	Forward: 5′-ACACTCAAGTCCCTCAACA-3′	131
	Reverse: 5′-TCAATCCAGTAGTCTCCACTCT-3′