About the Authors

Aimee Shen

Affiliation Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts, United States of America

Darren E Higgins

To whom correspondence should be addressed. E-mail: dhiggins@hms.harvard.edu

Affiliation Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

AS and DEH conceived and designed the experiments. AS performed the experiments. AS and DEH analyzed the data. AS and DEH wrote the paper.