About the Authors

Gero Steinberg

G.Steinberg@exeter.ac.uk

Affiliation Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom

Competing Interests

This work was financially supported by Celtic Pharma. This did not influence the outcome or judgment of the data. This does not alter the author's adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

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