About the Authors
Boulder Lab for 3-D Electron Microscopy of Cells, Department of MCD Biology, University of Colorado, Boulder, Colorado, United States of America
Department Microbiology, University of California Davis, Davis, California, United States of America
The authors have declared that no competing interests exist.
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.