Figure 6From: Fabrication and in vitro evaluation of an articular cartilage extracellular matrix-hydroxyapatite bilayered scaffold with low permeability for interface tissue engineering Chondrocytes seeded on bilayered scaffolds after 7 days of culture. A: Gross observation. B and C: Upper layer. D–F: Interfacial zone and lower layer. G–I: Interfacial zone and lower layer of unseeded scaffold as control. D and G: Alizarin red staining. B, E, and H: Toluidine blue staining. C, F, and I: Safranin O staining.Back to article page