About the Authors

Yi-Ching Ong

Affiliation Stanford University, Department of Microbiology and Immunology, Stanford, California, United States of America

Jon P. Boyle

Affiliation University of Pittsburgh, Department of Molecular Biology, Pittsburgh, Pennsylvania, United States of America

John C. Boothroyd

jboothr@stanford.edu

Affiliation Stanford University, Department of Microbiology and Immunology, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: Y-CO JCB. Performed the experiments: Y-CO. Analyzed the data: Y-CO JPB JCB. Contributed reagents/materials/analysis tools: Y-CO JPB. Wrote the paper: Y-CO JCB.