Aquaporin 9 Blocking Peptide (#BLP-QP009) is the original antigen used for immunization during Anti-Aquaporin 9 Antibody (#AQP-009) generation. The blocking peptide binds and ‘blocks’ Anti-Aquaporin 9 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.