About the Authors

Tzvia Abramson

Affiliations Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California, United States of America, Department of Biological Sciences, San Jose State University, San Jose, California, United States of America

Hassya Kedem

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

David A. Relman

relman@stanford.edu

Affiliations Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California, United States of America, Department of Medicine, Stanford University School of Medicine, Stanford, California, United States of America, Veterans Affairs Palo Alto Health Care System, Palo Alto, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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