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Relative level of mRNA in different groups at 4 weeks (mean ± SD)
| Group | SFBM-both | BM-only | SF-only | None-SFBM | Free plug |
|---|---|---|---|---|---|
| Agg | 1.2 ± 0.1 | 0.4 ± 0.1**,## | 0.8 ± 0.1** | 0.4 ± 0.2**,# | 1.0 ± 0.0 |
| ColII | 1.2 ± 0.5 | 0.2 ± 0.1**,# | 0.6 ± 0.1** | 0.1 ± 0.1**,# | 1.0 ± 0.0 |
| MMP13 | 1.5 ± 0.5 | 3.2 ± 0.3**,# | 1.9 ± 0.3 | 3.8 ± 1.0**,## | 1.1 ± 0.1 |
* P < 0.05 vs. SFBM-both group, ** P < 0.01, vs. control group; # P < 0.05 vs. SF-only group, ## P < 0.01, vs. SF-only group
