About the Authors
Howard Hughes Medical Institute, Department of Molecular Biology, Princeton University, New Jersey, United States of America
Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, New Jersey, United States of America
The authors have declared that no competing interests exist.
SDR and EFW conceived and designed the experiments. SDR performed the experiments. SDR. OE, ST, and EFW analyzed the data. SDR, OE, and EFW contributed reagents/materials/analysis tools. SDR and OE wrote the paper.