NMDAR3A/GRIN3A (extracellular) Blocking Peptide (#BLP-GC030) is the original antigen used for immunization during Anti-NMDAR3A (GRIN3A) (extracellular) Antibody (#AGC-030) generation. The blocking peptide binds and ‘blocks’ Anti-NMDAR3A/GRIN3A (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.