About the Authors

Ying-Ying Wang

Affiliation Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Samuel K. Lai

Current address: Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Affiliation Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America

Conan So

Affiliation Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Craig Schneider

Affiliation Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America

Richard Cone

Affiliation Department of Biophysics, Johns Hopkins University, Baltimore, Maryland, United States of America

Justin Hanes

hanes@jhu.edu

Affiliations Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America, Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America, Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America, Department of Environmental Health Sciences, Johns Hopkins School of Public Health, Baltimore, Maryland, United States of America, Center for Cancer Nanotechnology Excellence, Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland, United States of America, Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YYW SL RC JH. Performed the experiments: YYW. Analyzed the data: YYW SL C. So C. Schneider. Wrote the paper: YYW SL RC JH.