Table II.

Alkaline phosphatase activity of Ad-BMP7-MSCs at different time.

	Alkaline phosphatase activity (mean ± SD)
	2 day	4 day	6 day	8 day	10 day	12 day	P-value
Control	11.26±0.77	12.46±0.55	14.61±0.35	16.32±0.90	19.35±0.42	20.92±0.49	P<0.05
Ad-BMP7-MSCs	12.27±0.58	14.37±0.65	22.44±0.64	27.05±0.42	30.62±0.47	34.01±0.32

BMP7, bone morphogenetic protein-7; MSCs, mesenchymal stem cells; SD, standard deviation.