About the Authors

Andrew D. S. Cameron

Current address: Department of Biology, University of Regina, Regina, Canada

Charles J. Dorman


Affiliation Department of Microbiology, Moyne Institute of Preventive Medicine, School of Genetics and Microbiology, Trinity College Dublin, Dublin, Ireland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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