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Diagram showing the design and experiments of the study. BM-MSCs: bone marrow mesenchymal stem cells; FACS: Fluorescence Activated Cell Sorting; Red-MSCs: mesenchymal stem cells retrovirally transfected with dsRFP gene; BBB: Basso-Beattie-Bresnahan score; MSCG: Mesenchymal Stem Cells Group; FGG: Fibrin Glue Group
