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. 2021 May 6;11:9683. doi: 10.1038/s41598-021-89239-8

Figure 4.

Figure 4

Histological analysis of the inhibitory effect of cultured MSCs versus thawed cryopreserved MSCs on osteoarthritis (OA) progression. (A) Representative histological sections stained with safranin O. A, anterior; P, posterior. (B) Osteoarthritis Research Society International (OARSI) histological score. NS, not significant; *p < 0.05 by Wilcoxon's signed rank test (n = 6).