产品介绍 Human CD137L, also known as 4-1BB ligand (4-1BBL), tumor necrosis factor ligand superfamily member 9, TNFSF9. GenBank Accession No. NM_003811, a.a. 71-254(end) with an N-terminal His-tag, expressed in an E. coli expression system. MW = 21 kDa.