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. 2020 Jul 10;11:276. doi: 10.1186/s13287-020-01781-w

Fig. 3.

Fig. 3

Exosomes alleviate cartilage damage in OA rats. a In vivo imaging of the rat after injection of the exosomes in the joint cavity. Fluo, fluorescence, BF, brightfield. b Gross morphological images of rat’s knee. c Images of H&E and Safranin O/Fast Green staining of knee joint specimens. Scale bar = 50 μm. d Osteoarthritis Research Society International (OARSI) score for the cartilage among different groups. ***< 0.001, compared with the sham group. #< 0.05, compared with the OA group. n = 8 for each group