Recombinant SARS-CoV-2 (2019-nCoV) Spike RBD-His Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Arg319-Phe541) of SARS-COV-2 (2019-nCoV) Spike RBD-His (Accession YP_009724390.1) fused with a 6*His t