About the Authors

Bing Zhu

Contributed equally to this work with: Bing Zhu, Teng Xu

Affiliation The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China

Teng Xu

Contributed equally to this work with: Bing Zhu, Teng Xu

Affiliation The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China

Jianlong Yuan

Affiliation The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China

Xudong Guo

xudguo@yahoo.com (XG); nmliudongjun@sina.com (DL)

Affiliation The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China

Dongjun Liu

xudguo@yahoo.com (XG); nmliudongjun@sina.com (DL)

Affiliation The Key Laboratory of Mammalian Reproductive Biology and Biotechnology of the Ministry of Education, Inner Mongolia University, Hohhot, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BZ TX XG DL. Performed the experiments: BZ TX. Analyzed the data: BZ TX. Contributed reagents/materials/analysis tools: BZ JY XG. Wrote the paper: BZ.