About the Authors
Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: LDH CAC. Performed the experiments: LDH CAC. Analyzed the data: LDH CAC. Contributed reagents/materials/analysis tools: LDH CAC. Wrote the paper: LDH CAC.