About the Authors
Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: LDB MXDO. Performed the experiments: LDB. Analyzed the data: LDB MXDO. Contributed reagents/materials/analysis tools: CD. Wrote the paper: LDB MXDO. Provided valuable intellectual discussion and expertise and comments on the manuscript: CD.