Fig. 3

Representative general histopathological images and the thicknesses of the femoral and tibial articular cartilages. Of sham (a, b), control (c, d), MSC (e, f), PRP (g, h), and MP (i, j). H&E and Safranin O stain. Scale bars = 90 μm. ^a p < 0.01 as compared with sham control by LSD test; ^b p < 0.01 and ^c p < 0.05 as compared with control by LSD test; ^d p < 0.01 as compared with MSC treated group by LSD test; ^e p < 0.01 and ^f p < 0.05 as compared with PRP treated group by LSD test