1. Neuroscience Graduate Program, The Ohio State University, Columbus, Ohio.
2. Center for Brain and Spinal Cord Repair, The Ohio State University, Columbus, Ohio.
3. Small Animal Imaging Shared Resources, DHLRI, The Ohio State University, Columbus, Ohio.
4. Center for Biostatistics, The Ohio State University, Columbus, Ohio.
5. Department of Neuroscience, The Ohio State University, Columbus, Ohio.