Effect of combination therapy on caspase-3 activation after SCI. Control, control group; SCI, SCI group; BMSCs, BMSCs group; Minocycline, Minocycline group; Therapy, Minocycline group and BMSCs + minocycline group. **P<0.01 versus control group; #P<0.05 versus SCI group; ##P<0.05 versus SCI group.