About the Authors

Keith W. Sockman
Department of Biology, University of North Carolina, Chapel Hill, North Carolina, United States of America

Corresponding Author

kws@unc.edu

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

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