Urotensin II Receptor Blocking Peptide (#BLP-ER003) is the original antigen used for immunization during Anti-Urotensin II Receptor Antibody (#AER-003) generation. The blocking peptide binds and ‘blocks’ Anti-Urotensin II Receptor primary antibody, this makes it a good negative reagent control to help confirm antibody specificity in western blot and immunohistochemistry applications. This control is also often called a pre-adsorption control.