Funding for this research was provided by:
National Natural Science Foundation of China (No. 51574123)
Natural Science Foundation of Hunan Province (No. 2017JJ3076)
Graduate Research and Innovation Projects of Hunan Province (No. CX2018B661)
Article History
Received: 12 October 2019
Revised: 20 April 2020
Accepted: 11 May 2020
First Online: 27 May 2020
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: The experiments comply with the current laws of the country in which they were performed.