IL4 antibody [bIL4-II] (Biotin) Cat. No. GTX02991-02 Cat. No. GTX02991-02 GTX02991-02 ELISA Image Sandwich ELISA analysis of bovine IL-4 protein using GTX02990 IL4 antibody [bIL4-I] as coating antibody and GTX02991-02 IL4 antibody [bIL4-II] (Biotin) as detecting antibody.Substrate : TMB See all IL4 products