Aquaporin 4/AQP4 (300-314) Blocking Peptide (#BLP-QP014) is the original antigen used for immunization during Anti-Aquaporin 4 (AQP4) (300-314) Antibody (#AQP-014) generation. The blocking peptide binds and ‘blocks’ Anti-Aquaporin 4/AQP4 (300-314) 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.