Biotinylated SARS-CoV-2 Spike RBD, His,Avitag (BA.4&BA.5/Omicron) (SPD-C82Ew) is expressed from human 293 cells (HEK293). It contain s AA Arg 319 - Lys 537 (Accession # QHD43416.1 (G339D, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, L452R, 1 * 200 µG