Fig. 2

Identification of BMDMs and their exosomes. a Morphology of the BMDMs under microscopy. b BMDMs surface markers F4-80 and CD11b were analyzed by flow cytometry. c Morphology of exosomes determined by TEM. d Particle size distribution of exosomes measured by DLS. e Exosome surface markers CD9, CD63 and TSG101 were examined by Western blotting. f BMDMs-derived exosomes were internalized by BMSCs. All experiments were repeated three times and shown are representative data