2019-nCoV (COVID-19) S1 protein, Fc Tag 2019-nCoV (COVID-19) S1 protein, Fc Tag (S1N-C5255) is expressed from human 293 cells (HEK29 3). It contains AA Val 16 - Arg 685 (Accession QHD43416.1). This protein carries a human IgG1 Fc tag at the C-termi n 1 * 100 µG