PE-Labeled Human HLA-E 0103,B2M Tetramer Protein HLM-HP2H7 is expressed from human 293 cells HEK293. It contains AA Gly 22 - Ile 305 HLA-E 0103, Ile 21 - Met 119 B2M Accession P13747 HLA-E 0103, P61769-1 B2M . 1 * 200 µG