About the Authors

Amit K. Jha

Affiliation Department of Bioengineering, University of California, Berkeley, California, United States of America

Wesley M. Jackson

Affiliation Department of Bioengineering, University of California, Berkeley, California, United States of America

Kevin E. Healy

kehealy@berkeley.edu

Affiliations Department of Bioengineering, University of California, Berkeley, California, United States of America, Department of Materials Science and Engineering, University of California, Berkeley, California, United States of America

Competing Interests

We have a patent application associated with this work entitled “Tunable, semi-interpenetrating polymer networks (sIPNs) for medicine and biotechnology”, US Patent Application: US 10/385,900, Healy K, Stile R (Jan 1, 2004), which has been assigned to the University of California, Berkeley. There are currently no restrictions on data or material sharing as a result of this patent application. This does not alter the authors' adherence to all PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AKJ KEH. Performed the experiments: AKJ. Analyzed the data: AKJ WMJ KEH. Contributed reagents/materials/analysis tools: AKJ KEH. Wrote the paper: AKJ WMJ KEH.