About the Authors
La Jolla Institute for Allergy and Immunology, La Jolla, California, United States of America
Department of Pharmacology, University of California San Diego, La Jolla, California, United States of America
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: YK TK AYA DDN. Performed the experiments: YK TK AYA. Analyzed the data: YK TK AYA DDN. Wrote the paper: YK AYA DDN.