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SA mitigates cartilage degradation in a rat OA model in vivo. (A) Microscopic photos of safranin-O/fast green- and toluidine blue-stained sections of rat knee joints from the three groups. (B) OARSI scores of each group. The data are shown as the mean ± SD (n = 6). Significant differences between groups are indicated as ***p < 0.001; ∗p < 0.05.
