Human 4-1BBL / CD137L protein, DDDDK tag Cat. No. GTX65634-pro Cat. No. GTX65634-pro GTX65634-pro Image "Pull down assay of GTX65634-pro CD137L protein (DDDDK tagged) by hCD137-Fc. 1. hCD137-Fc + hCD137L-DDDDDK-tag 2. hCD137-Fc + hGITRL-DDDDDK-tag 3. hCD137-Fc + hGITRL-His-tag 4. hGITR-Fc + hCD137L-DDDDDK-tag 5. hGITR-Fc + hGITRL-DDDDDK-tag" 1 / 1 Species Human See all 4-1BBL / CD137L protein products