About the Authors

Christian L Barrett

Affiliation Bioengineering Department, University of California San Diego, La Jolla, California, United States of America

Bernhard O Palsson

To whom correspondence should be addressed. E-mail: palsson@ucsd.edu

Affiliation Bioengineering Department, University of California San Diego, La Jolla, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

CLB conceived and designed the experiments, performed the experiments, analyzed the data, and contributed reagents/materials/analysis tools. BOP made the work possible by having a lab. CLB wrote the paper. BOP edited and proofread the manuscript.