[1] Robarts Res Inst, BioTherapeut Res Grp, Spinal Cord Injury Team, London, ON N6A 5K8, Canada
[2] Univ Western Ontario, Neurosci Program, London, ON N6A 5K8, Canada
[3] Univ Western Ontario, Dept Physiol & Pharmacol, London, ON N6A 5K8, Canada
[4] Univ Western Ontario, Dept Microbiol & Immunol, London, ON N6A 5K8, Canada
[5] Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5K8, Canada