[Retracted] ECM-Mimicking Hydrogels Loaded with Bone Mesenchymal Stem Cell-Derived Exosomes for the Treatment of Cartilage Defects

Figure 2

Characteristics of GelMA hydrogel loaded with exosomes. (a) Schematic diagram of GelMA hydrogel-loaded exosome synthesis; (b) NMR characterization of methacrylated gelatin; (c) Rheological analysis of GelMA-Exos hydrogel; (d) quantitative analysis of hydrogel rheological testing; (e) SEM image of GelMA-Exos hydrogel; (f) the daily release curve of exosomes (n = 3); (g) the cumulative release profile of exosomes for 14 days (n = 3); (h) exosomes loaded in the hydrogel were phagocytosed by chondrocytes.

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