About the Authors
UMR 5235 CNRS, Université de Montpellier 2, Montpelier, France
UMR CNRS 5203, INSERM U661, Université de Montpellier 1 and 2, Montpelier, France
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JFD ML. Performed the experiments: SB AM JP. Analyzed the data: SB. Contributed reagents/materials/analysis tools: JFD. Wrote the paper: SB ML.