About the Authors

Cindi L. Schwartz

Affiliation Boulder Lab for 3-D Electron Microscopy of Cells, Department of MCD Biology, University of Colorado, Boulder, Colorado, United States of America

John M. Heumann

Affiliation Boulder Lab for 3-D Electron Microscopy of Cells, Department of MCD Biology, University of Colorado, Boulder, Colorado, United States of America

Scott C. Dawson

Affiliation Department Microbiology, University of California Davis, Davis, California, United States of America

Andreas Hoenger

andreas.hoenger@colorado.edu

Affiliation Boulder Lab for 3-D Electron Microscopy of Cells, Department of MCD Biology, University of Colorado, Boulder, Colorado, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AH SCD CLS JMH. Performed the experiments: CLS JMH. Analyzed the data: AH SCD CLS. Contributed reagents/materials/analysis tools: AH SCD. Wrote the paper: CLS AH SCD. Designed the software used in analysis: JMH.