About the Authors

Yan Dong

dongyan2006@yahoo.com (YD); mheien@arizona.edu (MLH)

Affiliations Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, China, Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, United States of America

Gang Ning

Affiliation Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America

Andrew G. Ewing

Affiliations Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, United States of America, Department of Neural and Behavioral Sciences, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America, Department of Chemistry, University of Gothenburg, Göteborg, Sweden

Michael L. Heien

dongyan2006@yahoo.com (YD); mheien@arizona.edu (MLH)

Affiliations Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, United States of America, Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YD MLH AGE. Performed the experiments: YD GN. Analyzed the data: YD GN MLH. Contributed reagents/materials/analysis tools: YD GN MLH. Wrote the paper: YD MLH AGE.