About the Authors

Olivia Twu

Affiliation Molecular Biology Institute and Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America

Patricia J. Johnson

johnsonp@ucla.edu

Affiliation Molecular Biology Institute and Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.