Affiliation: | 1. State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, PR China;2. College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-tech Industrial Development Zone, Daqing, PR China;3. Graduate School of the Chinese Academy of Sciences, Beijing, PR China;4. Animal Science and Technology College, Beijing University of Agriculture, Beijing, PR China |