About the Authors
- William T. Jackson
- Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: ALR WTJ. Performed the experiments: ALR. Analyzed the data: ALR WTJ. Contributed reagents/materials/analysis tools: ALR WTJ. Wrote the paper: ALR WTJ.