Fig. 1From: Adipose-derived mesenchymal stromal cell-derived exosomes promote tendon healing by activating both SMAD1/5/9 and SMAD2/3Characterization of ADSC-Exos. a Morphology of ADSC-Exos under a transmission electron microscope. b Particle size distribution. c Western blot was used to detect exosome surface markers. d PKH26-labeled ADSC-Exos internalization by TSCs. e Profile of ADSC-Exos released from the GelMA. Bars (ADSC-Exos) 100nm; bars (ADSCs), 100μmBack to article page