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

Figure 1

Identification of bone marrow stem cells and their exosomes. (a) Schematic diagram of the extraction process of BMSCs-derived exosomes; (b) Micrograph of obtained nanoparticles by TEM; (c) Particle size analysis of the nanoparticles by qNano ® system; (d) Exosomes markers of CD9 and TSG101 by Western blot.

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