PAR2/F2RL1 Blocking Peptide (#BLP-PR032) is the original antigen used for immunization during Anti-PAR2 (F2RL1) Antibody (#APR-032) generation. The blocking peptide binds and ‘blocks’ Anti-PAR2/F2RL1 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.