About the Authors
Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
Department of Biology, University of Victoria, Victoria, British Columbia, Canada
Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
The authors have declared that no competing interests exist.
Conceived and designed the experiments: LRH TWP. Performed the experiments: LRH JMT AMJ BAE MR CNW BG. Analyzed the data: LRH JMT AMJ BAE MR TWP. Contributed reagents/materials/analysis tools: BG REWH TWP. Wrote the paper: LRH JMT REWH TWP.