About the Authors
Department of Biological Sciences and Center for Reproductive Biology, University of Idaho, Moscow, Idaho, United States of America
Radioisotope Research Center, Nara Medical University School of Medicine, Kashihara, Nara, Japan
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JMOD AGZ EAF. Performed the experiments: AGZ EAF. Analyzed the data: JMOD AGZ CJB TM EAF. Contributed reagents/materials/analysis tools: CJB TM. Wrote the paper: JMOD AGZ EAF.