Fig. 6From: Autologous stem cell-derived chondrocyte implantation with bio-targeted microspheres for the treatment of osteochondral defectsMicrospheres under light microscope a 7th day × 20 (bar 100 μm), b 15th day × 20 (bar 100 μm), c 22th day × 20 (bar 100 μm), and d 22th day × 40 (bar 50 μm)Back to article page