SARS-CoV-2 Spike S1 His Tag (B.1.1.529/Omicron) (S1N-C52Ha) is expressed from human 293 cells (HEK293). It contains AA Val 16 - Arg 685 (Accession # QHD43416.1 (A67V HV69-70del T95I G142D VYY143-145del N211del L212I ins214EPE G339D S371L S 417N N440 1 * 100 µG