About the Authors
Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky College of Medicine, Lexington, Kentucky, United States of America
Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: AV JFT BS. Performed the experiments: AV PK KB. Analyzed the data: AV PK KB JFT BS. Wrote the paper: AV.