Fig 3. Whole mounts of control 10% (A, B, C) and 20% defects (D, E, F) stained with methylene blue (A, D) or methylene blue/alizarin red (B, E), and H & E-stained sections(C, F), three months post-operation.

Tibia is on the left and fibula on the right in all photos. Both cartilage and bone (arrows) have regenerated across the defects. Bars in (C, D) equal 400 μm.