SARS-CoV-2 S1 protein, Fc Tag (S1D-C5254) is expressed from human 293 cells (HEK293). It contains AA Val 16 - Arg 685 (Accession # Q HD43416.1). The mutations (HV69-70del, Y144del, N501Y, A570D, D614G, P681H) were identified in the SARS-CoV-2 Alpha v 1 * 100 µG