Human OX40L, also known as tumor necrosis factor ligａnd superfamily member 4 (TNFSF4) and CD252, GenBank Accession No. NM_003326, a.a. 51-183(end) with a N-terminal His-Avi-tag, expressed in a HEK293 cell expression system. MW = 23 kDa. This protein runs at a higher MW by SDS-PAGE due to glycosylation.