Table I. Animal Experimental Design.
| Group name | Animal number (n) | Schwann cell (SC) description | Number of cells transplanted |
|---|---|---|---|
| Untreated | 8 | Untreated (normal culture conditions) | 1×106 SCs |
| GDNF-on | 8 | Transduced with constitutively active lentivirus containing transgene GDNF | 1×106 SCs |
| GDNF-tet-on (DOX) | 8 | Transduced with tetracycline inducible lentivirus containing transgene GDNF; Doxycycline for 6 weeks in vivo | 1×106 SCs |
| GDNF-tet-on (no DOX) | 8 | Transduced with tetracycline inducible lentivirus containing transgene GDNF; No Doxycycline | 1×106 SCs |
| GDNF-tet-on (1wk DOX) | 8 | Transduced with tetracycline inducible lentivirus containing transgene GDNF; Doxycycline for 1 week in vivo | 1×106 SCs |
| ANA | 8 | No cells added | None |
All animals were harvested for nerve tissue 6 weeks following procedures.