About the Authors

Alessandra Rigamonti

Contributed equally to this work with: Alessandra Rigamonti, Kristen Brennand

Affiliations Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Boston, Massachusetts, United States of America, Doctorate of Prenatal Science, Fetal Diagnosis and Therapy, University of Milan, Milan, Italy

Kristen Brennand

Contributed equally to this work with: Alessandra Rigamonti, Kristen Brennand

Affiliation Salk Institute for Biological Studies, La Jolla, California, United States of America

Frank Lau

Affiliation Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Boston, Massachusetts, United States of America

Chad A. Cowan

ccowan1@partners.org

Affiliation Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AR KJB CAC. Performed the experiments: AR KJB FL CAC. Analyzed the data: AR KJB FL CAC. Wrote the paper: KJB CAC.