“…Since olfactory ensheathing cells (OECs) have been reported to enhance axonal regeneration in rat spinal cord when transplanted into lesion sites (Li et al, 1997;Ramon-Cueto et al, 1998), OECs have become a prime candidate for cell-mediated repair following a variety of Central Nervous System (CNS) lesions (Richter and Roskams, 2008) not only in animal model but also in clinical situation (Li et al, 1998;Dobkin et al, 2006;Franssen et al, 2007;Bauchet et al, 2008). More and more literature reviews give us more and more hope that OEC transplantation to be one of the most promising therapeutic strategies (Barnett and Riddell, 2007;Sasaki et al, 2007;Bauchet et al, 2008;Bunge, 2008;Radtke et al, 2008;Richter and Roskams, 2008;Kawaja et al, 2009); OECs have been successfully transplanted in acute (Resnick et al, 2003;Polentes et al, 2004;Collazos-Castro et al, 2005;Lopez-Vales et al, 2006;Andrews and Stelzner, 2007;Sasaki et al, 2007) and chronic (Andrews and Stelzner, 2004;Lopez-Vales et al, 2007) models of rodent spinal cord injury.…”