Alpha 2 Na+/K+ ATPase Blocking Peptide (#BLP-NP002) is the original antigen used for immunization during Anti-Alpha 2 Na+/K+ ATPase Antibody (#ANP-002) generation. The blocking peptide binds and ‘blocks’ Anti-Alpha 2 Na+/K+ ATPase 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.