GRIK5/GluK5 (extracellular) Blocking Peptide (#BLP-GC042) is the original antigen used for immunization during Anti-GRIK5 (GluK5) (extracellular) Antibody (#AGC-042) generation. The blocking peptide binds and ‘blocks’ Anti-GRIK5/GluK5 (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.