About the Authors
Department of Bioengineering, University of California San Diego, La Jolla, California, United States of America
Pacific Northwest National Laboratory, Richland, Washington, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: HL JAL VAP KZ. Performed the experiments: HL VAP YT D-HL KZ. Analyzed the data: HL JAL HN ACS-R JNA YQ. Contributed reagents/materials/analysis tools: RDS JNA. Wrote the paper: HL JAL HN KZ.