Fig. 9From: Autologous stem cell-derived chondrocyte implantation with bio-targeted microspheres for the treatment of osteochondral defectsMicroscopic assessment of the cartilage tissues at × 4 magnification with hematoxylin and eosin staining (bar 1000 μm): control group (a), microfracture group (b), scaffold group (c), and microsphere group (d)Back to article page