About the Authors

Sitao Wu

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

Congjun Li

Affiliation USDA-ARS, Bovine Functional Genomics Laboratory, Beltsville, Maryland, United States of America

Wen Huang

Affiliation Department of Genetics, North Carolina State University, Raleigh, North Carolina, 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

Robert W. Li

robert.li@ars.usda.gov

Affiliation USDA-ARS, 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: RWL CL. Performed the experiments: CL RWL. Analyzed the data: SW WH WL RWL. Wrote the paper: RWL.