About the Authors
Department of Chemistry, Stanford University, Stanford, California, United States of America
Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California, United States of America
Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: VAV MSS KAD. Performed the experiments: VAV MSS. Analyzed the data: VAV. Contributed reagents/materials/analysis tools: VAV MSS. Wrote the paper: VAV. Edited the manuscript: MSS KAD.