Cav1.3/CACNA1D (extracellular) Blocking Peptide (#BLP-CC311) is the original antigen used for immunization during Anti-CaV1.3 (CACNA1D) (extracellular) Antibody (#ACC-311) generation. The blocking peptide binds and ‘blocks’ Anti-Cav1.3/CACNA1D (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.