Fig. 5.

Masson’s trichrome staining of the repaired cartilage defects. Samples have been stained by Masson’s trichrome at 3 and 6 months post-implantation in each group and shown in low and high magnification. Mo: month. A, D, G, J (FG + MenSCs group), note to the noticeable deposition of collagen fibers in defect area indicated by Masson’s trichrome staining. B, E, H, K (FG group), note to slight to moderate intensity of Masson’s trichrome staining. C, F, I, L (control group), note to lower intensity of Masson’s trichrome staining compared to normal hyaline cartilage