(A-E, J, L, M) The immunofluorescence and western blot assay of GAP-43 in injured spinal cord at 7d after BMSCs transplantation. Scale bars: 50μm. (A) Control group, (B) SCI + vehicle group, (C) SCI+BMSCs group, (D) SCI+BMSCs+TSP-1 group, (E) SCI+BMSCs-TSP-1 group, (J) The mean density of GAP-43 in SCI+vehicle, SCI+BMSCs, SCI+BMSCs+TSP-1 and SCI+BMSCs-TSP-1 group at 7d. **P<0.01. (L) The western blot assay of GAP-43 in injured spinal cord at 7d and 28d after BMSCs transplantation. (M) The expression level of GAP-43 in SCI+vehicle, SCI+BMSCs, SCI+BMSCs+TSP-1 and SCI+BMSCs-TSP-1 group at 7d. (A, F-I, K, N) The immunofluorescence and western blot assay of GAP-43 in injured spinal cord at 28d after BMSCs transplantation. Scale bars: 50μm. (A) Control group, (F) SCI+vehicle group, (G) SCI+BMSCs group, (H) SCI+BMSCs+TSP-1 group, (I) SCI+BMSCs-TSP-1 group, (K) The mean density of GAP-43 in the SCI+vehicle, SCI+BMSCs, SCI+BMSCs+TSP-1 and SCI+BMSCs-TSP-1 group. **P<0.01, *P<0.05. (N) The expression level of GAP-43 in SCI+vehicle, SCI+BMSCs, SCI+BMSCs+TSP-1 and SCI+BMSCs-TSP-1 group at 28d.