About the Authors

Daniel P. Denning

Affiliation Howard Hughes Medical Institute and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

Victoria Hatch

Affiliation Howard Hughes Medical Institute and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

H. Robert Horvitz

horvitz@mit.edu

Affiliation Howard Hughes Medical Institute and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

Competing Interests

The authors declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DPD HRH. Performed the experiments: DPD VH. Analyzed the data: DPD VH HRH. Contributed reagents/materials/analysis tools: DPD VH HRH. Wrote the paper: DPD HRH.