Fig. 4From: HWJMSC-EVs promote cartilage regeneration and repair via the ITGB1/TGF-β/Smad2/3 axis mediated by microfracturesHWJMSCs and HWJMSC-EVs upregulated ITGB1 and TGF-β in hBMSCs and chondrocytes. The expressions of ITGB1, TGF-β, p-Smad2/3, and Smad2/3 in hBMSCs and chondrocytes detected by Western blotting. Mean ± SD, n = 3. *P < 0.05, **P < 0.01Back to article page