Table 1. The main test instruments and equipment.

Name	Model	Manufacturer
Microplate reader	Model RT-2100C	Rayto Life and Analytical Sciences Co., Ltd., Shenzhen
Automatic microplate washer	Model RT-3000	Rayto Life and Analytical Sciences Co., Ltd., Shenzhen
Refrigerator	Model YC-280L	Zhongke Meiling Cryogenics Co., Ltd.
Centrifuge	Model TD5A-WS	Changsha Xiangyi Centrifuge Instrument Co., Ltd.
Electric incubator	Model HPX-9082ME	Medical Equipment Factory, Shanghai Boxun Industry & Commerce Co., Ltd.
Micropipette	1,000 μL, 200 μL	Purui
EP tube	1.5 mL
Tip	1,000 μL, 200 μL
Centrifugal tube	5 mL