About the Authors
Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona, United States of America
The Santa Fe Institute, Santa Fe, New Mexico, United States of America
Genomics and Computational Biology Program, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
Systems Biology Division, The Wistar Institute, Philadelphia, Pennsylvania, United States of America
The authors have declared that no competing interests exist.
JWP and CCM conceived and designed the experiments. JWP, KS, and CCM performed the experiments. JWP, KS, and CCM analyzed the data. JWP and CCM wrote the paper.