Recombinant PE-Labeled Human HLA-A*02:01&B2M&MAGE-A1 (KVLEYVIKV) Tetramer Protein is expressed from HEK293 with His tag and Avi tag at the C-Terminus. PE-Labeled Human HLA-A*02:01&B2M&MAGE-A1 (KVLEYVIKV) Tetramer is assembled by biotinylated monomer and PE-Labeled streptavidin, It contains Gly25-Thr305(HLA-A*02:01), Ile21-Met119(B2M) and KVLEYVIKV peptide.