About the Authors
Section of Cell and Developmental Biology, University of California San Diego, La Jolla, California, United States of America
Section of Tropical Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: YH BZ RVA. Performed the experiments: YH BZ BK YYY MMM KJ. Analyzed the data: YH BZ RVA. Wrote the paper: RVA.