SNAP-25 Blocking Peptide (#BLP-NR001) is the original antigen used for immunization during Anti-SNAP-25 Antibody (#ANR-001) generation. The blocking peptide binds and ‘blocks’ Anti-SNAP-25 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.