Summary: Cat.No. : TNFRSF1B-193H Product Overview : Recombinant Human TNFRSF1B (Met1-Arg268, natural variant 196 Met/Arg), fused with a C-terminal polyhistidine tag, was produced in Human Cells. Source : Human Cells Species : Human Tag : His Predicted N Terminal : Leu 23 Form : Lyophilized from sterile PBS, pH 7.4.Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization.