Peptide Sequence: soluble rat guanylate cyclase .beta.1 subunit, amino acids 188-207 (EDFYEDLDRFEENGTQDSR; last D=E in human and bovine){3531,4654,3535} · To be used in conjunction with Cayman's guanylate cyclase .beta.1 subunit (soluble) polyclonal antibody (Catalog No. 160897) to block protein-antibody complex formation during analysis for guanylate cyclase.