1. Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York.
2. Rensselaer Polytechnic Institute, Center for Biotechnology and Interdisciplinary Studies, Troy, New York.
3. Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York.
4. Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York.
5. Neural Stem Cell Institute, Rensselaer, New York.
6. School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
7. Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts.
8. Harvard Medical School, Boston, Massachusetts.