Each vial contains 200 μg of lyophilized peptide derived from human cPGE synthase amino acids 58-67 (CIDPNDSKHK). This peptide was used as an antigen for production of Cayman’s cPGE synthase polyclonal antibody (Catalog No. 160150) and should be used in conjunction with this antibody to block protein-antibody complex formation during analysis for cPGE synthase.