
ELISA plate was coated by 2019-nCoV NP (Cat# E42020T6), 100 µL/cell at 1µg/ml. The indirect ELISA analysis was performed by loading 100 µL per well of the BN18 (RED,cat#E42020T15) and N18-m1 (BLUE, cat#E42020T15m1) at various concentrations, respectively. The plate was incubated for 1 hours at 37℃, then washed