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D+Q increased cartilage thickness and decreased OARSI score in old TMJ. Representative images of Toluidine blue staining (a) and Safranin O staining (c) were shown. (b) Cartilage thickness was shown. (d) OARSI score was assessed and shown. (e) Representative images of µCT. (f) Bone volume over total volume and (g) Bone density was shown. All data were shown as means ±SEM. *, p < 0.05 for two‐way ANOVA; #, p < 0.05 for Student's t test
