Biotinylated SARS-CoV-2 Spike Trimer His Avitag (B.1.1.529/Omicron) (SPN-C82Ee) is the ectodomain of SARS-CoV-2 spike protein which contains AA Val 16 - Pro 1213 (Accession # QHD43416.1 (A67V HV69-70del T95I G142D VYY143-145del N211del L212I 9D S371 1 * 25 µG