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Summary of histological features
| Animal no. 1 | Animal no. 2 | ||||
|---|---|---|---|---|---|
| Control site | Implanted site | Control site | Implanted site | ||
| Cartilage | Surface | Irregularity | Smooth | Smooth | Smooth |
| Matrix | Fibrous tissue | Fibrocartilage | Fibrocartilage | Mixture; hyaline/fibrocartilage (transformation) | |
| Subchondral bone | Granulation tissue | Increased remodeling | Detached (in the bottom half of the defect) | Increased remodeling (endochondral ossification) | |
