Table 2.

Quantified immunohistochemical staining intensity of collagen II, collagen X and aggrecan in chondrogenic pellets (N = 3).

	Average Staining Intensity Ratio	Chondrogenesis Day 17	Chondrogenesis Day 24
Col II	(S + HS)/S	1.58 ± 0.15*	1.40 ± 0.10*
	(KD + HS)/KD	1.59 ± 0.03**	1.30 ± 0.09*
	KD/S	0.68 ± 0.06*	0.70 ± 0.07*
	(S + HS)/(KD + HS)	0.71 ± 0.07	0.65 ± 0.04*
Col X	(S + HS)/S	1.39 ± 0.10*	1.27 ± 0.07*
	(KD + HS)/KD	1.56 ± 0.10*	1.31 ± 0.04*
	KD/S	0.64 ± 0.02*	0.77 ± 0.04*
	(S + HS)/(KD + HS	0.72 ± 0.02*	0.79 ± 0.08*
Aggrecan	(S + HS)/S	1.36 ± 0.03*	1.06 ± 0.03*
	(KD + HS)/KD	1.32 ± 0.06*	1.06 ± 0.07*
	KD/S	0.87 ± 0.11	0.87 ± 0.10
	(S + HS)/(KD + HS)	0.84 ± 0.13	0.88 ± 0.14

Chon: Chondrogenic; HS: Heat Shock; Col: Collagen; *P < 0.05; **P < 0.01.