R&D Systems, a Bio-Techne Brand's Goat IgG PE-conjugated Antibody is a Goat Polyclonal antibody. This antibody has been shown to work in applications such as: Other. The Goat IgG PE-conjugated Antibody was generated using IGHG1, and immunoglobulin heavy constant gamma 1 (G1m marker) as the antigen and it reacts with Goat.