About the Authors

Sheran H. W. Law

Affiliation Section on Vertebrate Development, Program on Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, United States of America

Thomas D. Sargent

tsargent@nih.gov

Affiliation Section on Vertebrate Development, Program on Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SHWL TDS. Performed the experiments: SHWL TDS. Analyzed the data: SHWL TDS. Contributed reagents/materials/analysis tools: SHWL TDS. Contributed to the writing of the manuscript: SHWL TDS.