About the Authors
Department of Biochemistry and Biophysics, Program in Developmental and Stem Cell Biology, Liver Center and Diabetes Center, University of California San Francisco, San Francisco, California, United States of America
Department of Biology, Johns Hopkins University, Baltimore, Maryland, United States of America
Department of Embryology, The Carnegie Institution for Science, Baltimore, Maryland, United States of America
Howard Hughes Medical Institute and Division of Basic Science, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MD CY DYRS. Performed the experiments: MD CY DS LP TPM. Analyzed the data: MD CY DYRS. Contributed reagents/materials/analysis tools: NN JDC SAF CBM. Wrote the paper: MD CY DYRS. Commented on the manuscript: DS NN JDC SAF CBM.