Funding for this research was provided by:
the Science and Technology Department of Sichuan Province (2017JY0099)
Received: 9 December 2019
Accepted: 15 October 2020
First Online: 27 October 2020
Ethics approval and consent to participate
: The use of materials and all experimental procedures involving animals were approved by Institutional Animal Care and Use Committee of the Chengdu Research Base of Giant Panda Breeding protocol #2019013.
: Not applicable.
: We are sure that there is no potential conflict of interest and no part of this paper has published or submitted anywhere.