SARS-CoV-2 Spike S1, His Tag (S1N-C52Hu) is expressed from human 293 cells (HEK293). It contains AA Val 16 - Arg 685 (Accession QHD 43416.1). The mutations (T19R, G142D, EF156-157del, R158G, L452R, T478K, D614G, P681R) were identified in the SARS-CoV 1 * 100 µG