Table 1.

Primers for real-time polymerase chain reaction

Gene names	Forward primer	Reverse primer
Col2a	CCGTGCTCCTGCCGTTTC	CTGAGGCAGTCTTTCACGTCT
Sox9	AAGCTCTGGAGACTTCTGAACG	CGTTCTTCACCGACTTCCTCC
Acan	CTACACGCTACACCCTCGAC	ACGTCCTCACACCAGGAAAC
Col10	CGATACCAAATGCCCACAGG	ATGGTCCTCTCTCTCCTGGT
Col1a	GTTCAGCTTTGTGGACCTCCG	GCAGTTCTTGGTCTCGTCAC
GAPDH	GTCAAGGCTGAGAACGGGAA	AAATGAGCCCCAGCCTTCTC

Col2a: collagen type II; Sox9: SRY‐related high mobility group‐box gene 9; Acan: aggrecan; Col10: collagen type X; Col1a: collagen type I; GAPDH: glyceraldehyde‐3‐phosphate dehydrogenase