About the Authors

Laura R. Schaevitz

Laura.Schaevitz@tufts.edu

Current address: Department of Biology, Tufts University, Medford, Massachusetts, United States of America

Affiliation Department of Biology, Wellesley College, Wellesley, Massachusetts, United States of America

Raffaella Nicolai

Affiliation Sigma Tau SpA, Pomezia, Italy

Carla M. Lopez

Affiliation Department of Biology, Wellesley College, Wellesley, Massachusetts, United States of America

Stefania D'Iddio

Affiliation Sigma Tau SpA, Pomezia, Italy

Emerenziana Iannoni

Affiliation Sigma Tau SpA, Pomezia, Italy

Joanne E. Berger-Sweeney

Current address: Department of Biology, Tufts University, Medford, Massachusetts, United States of America

Affiliation Department of Biology, Wellesley College, Wellesley, Massachusetts, United States of America

Competing Interests

Authors RN, SD, and EI are employees of the commercial funder of this research, Sigma-Tau S.p.A. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LRS RN SD EI JEBS. Performed the experiments: LRS CML. Analyzed the data: LRS. Contributed reagents/materials/analysis tools: RN SD EI. Wrote the paper: LRS JEBS.