About the Authors

Brad Busse

bbusse@gmail.com

Affiliations Biophysics Program, Stanford University, Stanford, California, United States of America, Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, United States of America

Stephen Smith

Affiliation Department of Molecular and Cellular Physiology, Stanford University, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BB SS. Performed the experiments: BB. Analyzed the data: BB. Contributed reagents/materials/analysis tools: BB. Wrote the paper: BB SS.