KCNK6/TWIK-2 Blocking Peptide (#BLP-PC040) is the original antigen used for immunization during Anti-KCNK6 (TWIK-2) Antibody (#APC-040) generation. The blocking peptide binds and ‘blocks’ Anti-KCNK6/TWIK-2 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.