Fig. 3

MenSCs embedded in collagen gel preserved the structures of degenerated disc following discectomy. (A): Gross appearance of the disc in different groups. (B): Hematoxylin and eosin staining of disc in different groups. (C): Safranin O and fast green staining of disc in different groups. (D): Disc degeneration scores. Images are representative of seven replicates. Scale bar = 100 μm; Values are presented as mean ± SEM. ** P < 0.01, *** P < 0.001