IP3 Receptor-1/ITPR1 Blocking Peptide (#BLP-CC019) is the original antigen used for immunization during Anti-IP3 Receptor-1 (ITPR1) Antibody (#ACC-019) generation. The blocking peptide binds and ‘blocks’ Anti-IP3 Receptor-1/ITPR1 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.