KCNH7/erg3 Blocking Peptide (#BLP-PC112) is the original antigen used for immunization during Anti-KCNH7 (erg3) Antibody (#APC-112) generation. The blocking peptide binds and ‘blocks’ Anti-KCNH7/erg3 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.