About the Authors

Bernd R. Gardill

Affiliation Department of Biology, Lehrstuhl für Biotechnik, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany

Michael R. Vogl

Affiliation Department of Biology, Lehrstuhl für Biotechnik, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany

Hai-Yan Lin

Affiliation State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China

Geoffrey L. Hammond

Affiliation Department of Obstetrics and Gynecology, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada

Yves A. Muller

ymuller@biologie.uni-erlangen.de

Affiliation Department of Biology, Lehrstuhl für Biotechnik, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BRG MRV GLH YAM. Performed the experiments: BRG MRV YAM. Analyzed the data: BRG HYL GLH YAM. Wrote the paper: BRG GLH YAM.