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| Group | N | Positive area percentage (% area) |
|---|---|---|
| Control group | 6 | 1.58±0.27##∆∆ |
| PBS group | 6 | 23.1±0.17** |
| OA group | 6 | 26.8±0.49** |
| Drug group | 6 | 7.8±0.27**##∆∆ |
Compared with the control group, **, P<0.01; compared with the PBS group, ##, P<0.01; compared with the OA group, ∆∆, P<0.01. PBS, phosphate buffer; OA, osteoarthritis.
