Funding for this research was provided by:
Agricultural Science and Technology Innovation Program of China (ASTIP-IAS15)
National Natural Science Foundation of China (31472180)
China Postdoctoral Science Foundation (2018M641566)
Received: 9 January 2019
Accepted: 6 July 2019
First Online: 12 July 2019
Ethics approval and consent to participate
: Animal experiments were approved by the Beijing Administration Committee of Laboratory Animals. All animal experiments were performed in strict accordance with the China Agricultural University Institutional Animal Care and Use Committee guidelines (CAU20160629-1) and followed the International Guiding Principles for Biomedical Research Involving Animals.
: Not applicable.
: The authors declare that they have no competing interests.