产品介绍 Human secreted B7-H4, also known as B7x and B7S1, with C-terminal His-tag GenBank Accession No. NP_078902, a.a. 29-258 expressed in a HEK293 cell expression system MW = 26.7 kDa (monomer). This protein runs at a higher M.W. by SDS-PAGE due to glycosylation.