3ug by SDS-PAGE under reducing condition and visualized by coomassie blue stain
SARS-CoV Spike RBD is coated at 5ug/ml (100ul/well) can bind ACE-2 in a Functional ELISA assay.
Supplier Page from United States Biological for SARS-CoV Spike RBD, Recombinant, aa306-515, His-Tag