About the Authors

Edward J. Banigan

Affiliations Department of Physics and Astronomy, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Philadelphia, United States of America, Department of Physics and Astronomy, Northwestern University, Evanston, Illinois, United States of America

Tajie H. Harris

Affiliations Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Philadelphia, United States of America, Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, Virginia, United States of America

David A. Christian

Affiliation Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Philadelphia, United States of America

Christopher A. Hunter

Affiliation Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Philadelphia, United States of America

Andrea J. Liu

ajliu@physics.upenn.edu

Affiliation Department of Physics and Astronomy, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Philadelphia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EJB THH DAC CAH AJL. Performed the experiments: THH. Analyzed the data: EJB. Wrote the paper: EJB THH CAH AJL.