Platelet-rich plasma increases transforming growth factor-beta1 expression at graft-host interface following autologous osteochondral transplantation in a rabbit model

Figure 6 Sagittal sections femoral condyle articular cartilage remote for the autologous osteochondral transplantation graft site (400 ×). Transforming growth factor-beta1 antibody staining is positive in cells that are stained brown. The top section was in the left knee which was treated with platelet-rich plasma and had the second highest ICRS score (20) and the bottom section is taken from the right knee which received saline with the lowest ICRS score (7). ICRS: International Cartilage Repair Society.