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. 2019 Dec 9;36(2):165–178. doi: 10.1007/s10565-019-09504-5

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© The Author(s) 2019

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Fig. 4 — Effects of 2D-Exos and 3D-Exos on migration of chondrocytes. a Light microscopy images (left) and quantitative analysis (right) of scratch wound assays. b Light microscopy images (left) and number of transmitted cells (right) in the transwell migration assay. c The protein (left) and mRNA level (right) of genes associated with migration (PDGF-AA, FGF-2). Data represent mean ± SEM. *p < 0.05, **p < 0.01, n = 3