Each vial contains 200 μg of lyophilized peptide derived from the human PAF receptor sequence (amino acids 260-269: LGFQDSKFHQ). This peptide was used as an antigen for production of the PAF receptor monoclonal antibody (Catalog No. 160600). This blocking peptide can be used in conjunction with Cayman’s PAF receptor monoclonal antibody to block protein-antibody complex formation during immunochemical analysis for PAF receptor.