About the Authors
Department of Zoology, University of Cambridge, Cambridge, United Kingdom
Friedrich Miescher Institut and Biozentrum, Department of Cell Biology, University of Basel, Basel, Switzerland
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: AM ML. Performed the experiments: AM MT ML. Analyzed the data: AM MT ML. Contributed reagents/materials/analysis tools: JFE. Wrote the paper: AM ML.