About the Authors

Deborah M. Gordon

dmgordon@stanford.edu

Affiliation Department of Biology, Stanford University, Stanford, California, United States of America

Competing Interests

The author is a member of the editorial board of PLOS ONE. This does not alter the author's adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

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