SARS-CoV-2 Spike NTD Protein, His Tag (BA.4 & BA.5/Omicron) (MALS verified) Synonym S1 protein NTD, Spike protein S1 NTD, BetaCoV S1-NTD Source SARS-CoV-2 Spike NTD Protein, His Tag (BA.4 & BA.5/Omicron) (SPD-C5246) is expressed from human 293 cells 1 * 100 µG