Fig. 1From: The therapeutic effects of gingival mesenchymal stem cells and their exosomes in a chimeric model of rheumatoid arthritisSchematic overview of the chimeric mouse model of synovitis. Cartilage-sponge-mesh implants with or without RASF were implanted subcutaneously in the right (1°) or left (2°) flank respectively. Five to 7 days after the implantation surgery, the mice were retro-orbitally injected with GMSC or GMSCExoBack to article page