CACNA2D1/Cavα2δ1 (extracellular) Blocking Peptide (#BLP-CC015) is the original antigen used for immunization during Anti-CACNA2D1 (CaVα2δ1) (extracellular) Antibody (#ACC-015) generation. The blocking peptide binds and ‘blocks’ Anti-CACNA2D1/Cavα2δ1 (extracellular) 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.