2019-nCoV (COVID-19) S protein RBD, His Tag 2019-nCoV (COVID-19) S protein RBD, His Tag (SPD-C52H3) is expressed from human 293 cell s (HEK293). It contains AA Arg 319 - Phe 541 (Accession QHD43416.1). This protein carries a polyhistidine tag at th h 1 * 1 mg