About the Authors

Karen Z. Lancaster

Affiliation Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America

Julie K. Pfeiffer

Julie.Pfeiffer@UTSouthwestern.edu

Affiliation Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KZL JKP. Performed the experiments: KZL JKP. Analyzed the data: KZL JKP. Wrote the paper: KZL JKP.