About the Authors

Grace W. Tang

Affiliation Department of Bioengineering, Stanford University, Stanford, California, United States of America

Russ B. Altman

russ.altman@stanford.edu

Affiliations Department of Bioengineering, Stanford University, Stanford, California, United States of America, Department of Genetics, Stanford University, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GWT RBA. Performed the experiments: GWT. Analyzed the data: GWT RBA. Contributed reagents/materials/analysis tools: GWT. Wrote the paper: GWT RBA.