About the Authors

Fang Chen

Affiliation Unit for Laboratory Animal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America

Yongqun He

yongqunh@umich.edu

Affiliation Unit for Laboratory Animal Medicine and Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FC YH. Performed the experiments: FC. Analyzed the data: FC YH. Contributed reagents/materials/analysis tools: YH. Wrote the paper: FC YH.