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H&E staining of spinal cord tissue in each group. (A) 14 days after transplantation; (B) 28 days after transplantation: (a1, a2) control group; (b1, b2) sham group; (c1, c2) OECs treated group; (d1, d2) BMSCs treated group; (e1, e2) cotransplant treated group.
