Fig. 4
HE staining results. a–d, a1–d1 Sampling group 3 months after surgery; e–h, e1–h1 sampling group 6 months after surgery. a, e, a1, e1 Normal group. b, f, b1, f1 Control group. c, g, c1, g1 Material group. d, h, d1, h1 MSCs group. a–h The scan results of HE staining. a1–h1 The result of HE staining after 50 times magnification. BM bone marrow, FT fibrous tissue, BT bone trabecula, NB new bone, CS cavitation structure