The Mouse RBP4/Retinol-Binding Protein 4 Biotinylated Antibody from R&D Systems, a Bio-Techne Brand is a Sheep Polyclonal antibody to RBP4. This antibody recognizes Mouse antigen. The Mouse RBP4/Retinol-Binding Protein 4 Biotinylated Antibody has been shown to work in the following applications: Western Blot.