1. Department of Anatomical Sciences and Neurobiology; University of Louisville; Louisville Kentucky 40202
2. Kentucky Spinal Cord Injury Research Center University of Louisville; Louisville Kentucky 40202
3. Department of Anesthesiology; University of Louisville; Louisville Kentucky 40202
4. Department of Neurological Surgery; University of Louisville; Louisville Kentucky 40202
5. Department of Microbiology and Immunology; University of Louisville; Louisville Kentucky 40202