Table 1.

MMP-13 gene expression level toward several treatment groups in OA

Groups	MMP-13 gene expression (ng/µl)
	Average	p-value
Group I	1.00 ± 0.00	0.002
Group II	1.00 ± 0.00
Group III	0.41 ± 0.13
Group IV	0.24 ± 0.03
Group V	0.13 ± 0.04
Group VI	0.04 ± 0.01

Description: Group I = Synoviocyte control incubated for 24 hours; Group II = Synoviocyte control incubated for 48 hours; Group III= Mesenchymal Stem Cell Wharton Jelly (MSC-WJ) incubated for 24 hours; Group IV = Mesenchymal Stem Cell Wharton Jelly (MSC-WJ) incubated for 48 hours; Group V = Synoviocyte MSC-WJ co-culture incubated for 24 hours; Group VI = Synoviocyte MSC-WJ co-culture incubated for 48 hours.