TMEM16B/ANO2 (extracellular) Blocking Peptide (#BLP-CL012) is the original antigen used for immunization during Anti-TMEM16B (ANO2) (extracellular) Antibody (#ACL-012) generation. The blocking peptide binds and ‘blocks’ Anti-TMEM16B/ANO2 (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.