About the Authors

Abeba Tesfaye

abeba.tesfaye@fda.hhs.gov

Affiliation Division of Viral Products, Center for Biologics Evaluation and Research, FDA, Bethesda, Maryland, United States of America

Judith Stift

Affiliation Institute of Pathology, Medical University of Vienna, Wien, Austria

Dragan Maric

Affiliation Division of Intramural Research, Flow Cytometry Core Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America

Qingwen Cui

Affiliation Division of Viral Products, Center for Biologics Evaluation and Research, FDA, Bethesda, Maryland, United States of America

Hans-Peter Dienes

Affiliation Institute of Pathology, Medical University of Vienna, Wien, Austria

Stephen M. Feinstone

Affiliation Division of Viral Products, Center for Biologics Evaluation and Research, FDA, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SMF AT. Performed the experiments: AT HPD SMF JS DM QC. Analyzed the data: AT HPD SMF. Wrote the manuscript: AT SMF.