About the Authors

Lucy X. Morris

Affiliation Howard Hughes Medical Institute, Department of Embryology, Carnegie Institution, Baltimore, Maryland, United States of America

Allan C. Spradling

spradling@ciwemb.edu

Affiliation Howard Hughes Medical Institute, Department of Embryology, Carnegie Institution, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LXM ACS. Performed the experiments: LXM. Analyzed the data: LXM ACS. Contributed reagents/materials/analysis tools: LXM. Wrote the paper: LXM ACS.