Table V.

DDR2 positive expression levels before and after treatment in the three groups of rats (%).

Time	Transplantation group (n=20)	KOA group (n=20)	Blank group (n=11)	F value	P-value
Before treatment	28.61±3.66	28.59±3.57	18.21±2.35	40.50	<0.001
After treatment	18.72±2.51	28.21±3.52	17.92±2.29	68.65	<0.001
t value	9.966	0.339	0.293	–	–
P-value	<0.001	0.737	0.772	–	–

DDR2, discoid domain receptor 2. KOA, knee osteoarthritis.