About the Authors

Wigard P Kloosterman

Affiliation Hubrecht Laboratory-KNAW, Utrecht, The Netherlands

Anne K Lagendijk

Affiliation Hubrecht Laboratory-KNAW, Utrecht, The Netherlands

René F Ketting

To whom correspondence should be addressed. E-mail: rene@niob.knaw.nl

Affiliation Hubrecht Laboratory-KNAW, Utrecht, The Netherlands

Jon D Moulton

Affiliation Gene Tools, Philomath, Oregon, United States of America

Ronald H. A Plasterk

Affiliation Hubrecht Laboratory-KNAW, Utrecht, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

WPK, AKL, RFK, JDM, and RHAP conceived and designed the experiments. WPK and AKL performed the experiments and analyzed data. JDM contributed reagents. WPK, RFK, JDM, and RHAP and wrote the paper.