SARS-CoV-2 Spike S1 Protein (242-244 deletion & L18F & D80A & D215G & R246I & K417N & E484K & N501Y & D614G, His & Avi), Biotinylated is expressed in HEK293 mammalian cells with His and Avi tag. The predicted molecular weight is 77.84 kDa and the accessi
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