NGF Blocking Peptide (#BLP-N240) is the original antigen used for immunization during NGF Blocking Peptide (#BLP-N240) generation. The blocking peptide binds and ‘blocks’ Anti-NGF 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.