About the Authors

Sitao Wu

Affiliation Center for Research in Biological Systems, University of California San Diego, San Diego, California, United States of America

Robert W. Li

Affiliation United States Department of Agriculture–Agricultural Research Service, Bovine Functional Genomics Laboratory, Beltsville, Maryland, United States of America

Weizhong Li

Affiliation Center for Research in Biological Systems, University of California San Diego, San Diego, California, United States of America

Cong-jun Li

congjun.li@ars.usda.gov

Affiliation United States Department of Agriculture–Agricultural Research Service, Bovine Functional Genomics Laboratory, Beltsville, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CJL. Performed the experiments: RWL SW CJL. Analyzed the data: SW RWL WL CJL. Contributed reagents/materials/analysis tools: SW WL CJL RWL. Wrote the paper: CJL.