About the Authors
Department of Microbiology and Immunology, Stanford University, Stanford, California, United States of America
Department of Medicine, Stanford University, Stanford, California, United States of America
Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
Veterans Affairs Palo Alto Health Care System, Palo Alto, California, United States of America
The authors have declared that no competing interests exist.
LD, MLS, and DAR conceived and designed the experiments. LD performed the experiments. LD, SMH, MLS, and DAR analyzed the data. LD, SMH, MLS, and DAR contributed reagents/materials/analysis tools. LD and DAR wrote the paper.