Summary: Cat.No. : TGFB1-152R Product Overview : Recombinant Rat Tgfb1 (P17246) (Met1-Ser390), fused with a polyhistidine tag at the C-terminus, was produced in Human Cells. Source : Human Cells Species : Rat Tag : His Predicted N Terminal : Leu 30 Form : Lyophilized from sterile PBS, pH 7.4.Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization.