Fig. 3From: Pellet coculture of osteoarthritic chondrocytes and infrapatellar fat pad-derived mesenchymal stem cells with chitosan/hyaluronic acid nanoparticles promotes chondrogenic differentiationHistological analysis of monoculture of IPFP mesenchymal stem cells (MSCs), monoculture of articular chondrocytes (ACs), and coculture of MSCs and ACs after 3Â weeks of chondrogenic induction. a H&E staining showing cell and matrix distribution. b Alcian blue staining showing GAG depositionBack to article page