Rats were randomly divided into six groups as follows: Group І: intact group (n = 5), Group ІІ: sham rats were subjected to laminectomy without SCI (n = 5), Group ІІІ: rats were subjected to laminectomy and SCI (n = 5), Group ІV: rats were subjected to laminectomy, SCI, and treated with 150 mg/kg MO (SCI-MO; n = 7), Group V: rats were subjected to laminectomy, SCI, and treated with hUCBSCs (SCI-hUCBSC; (n = 7), Group VІ: rats were subjected to laminectomy, SCI, and treated with combination of 150 mg/kg MO and hUCBSCs (SCI-MO-hUCBSC; n = 7). hUCBSCs were transplanted intraspinally 24 hr after injury. MO was daily injected intraperitoneally into treatment rat groups starting 1 day after injury for 14 days.