Summary: Cat.No. : CCL23-215H Product Overview : Recombinant Human CCL23 (AAB51134.1) (Arg22-Asn120), fused with a polyhistidine tag at the N-terminus, was produced in E. coli. Source : E. coli Species : Human Tag : His Predicted N Terminal : His Form : Lyophilized from sterile PBS, pH 7.4.Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization.