About the Authors

Julius Brennecke, Alexander Stark, Robert B Russell, Stephen M Cohen
European Molecular Biology Laboratory, Heidelberg, Germany

Corresponding Author


Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

JB, AS, and SMC conceived and designed the experiments. JB and AS performed the experiments and analyzed the data. JB, AS, RBR, and SMC wrote the paper.