1. Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
2. Center for Quantitative Biodesign, Duke University, Durham, North Carolina 27708, United States
3. Center for Biomolecular and Tissue Engineering, Duke University, Durham, North Carolina 27708, United States
4. Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina 27708, United States