About the Authors
Baker Institute for Animal Health, Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
Section of Molecular Genetics and Microbiology, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JTK AD SLS CRP. Performed the experiments: JTK AD CEH ABA LBG ANO. Analyzed the data: JTK AD LBG ANO SLS CRP. Contributed reagents/materials/analysis tools: JTK AD CEH ABA LBG SLS CRP. Wrote the paper: JTK AD SLS CRP.