Recombinant SARS-CoV-2 (2019-nCoV) Spike S1 Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Val16-Arg685) of SARS-COV-2 (2019-nCoV) Spike S1 (Accession YP_009724390.1) fused with a 6*His tag at the C