1. Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania.
2. Departments of Bioengineering, Pennsylvania State University, University Park, Pennsylvania.
3. Departments of Biochemistry and Molecular Biology, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania.
4. The Huck Institutes of Life Sciences, Pennsylvania State University, University Park, Pennsylvania.
5. Departments of Materials Science and Engineering, Bioengineering and the Huck Institutes of Life Sciences, Pennsylvania State University, University Park, Pennsylvania.