The Normal Sheep IgG Biotinylated Control Antibody from R&D Systems, a Bio-Techne Brand is a Sheep Polyclonal antibody to IGHG1, and immunoglobulin heavy constant gamma 1 (G1m marker). This antibody recognizes Sheep antigen. The Normal Sheep IgG Biotinylated Control Antibody has been shown to work in the following applications: Other.