| Immunogen | Fusion protein amino acids 720-804 (variable cytoplasmic domain) of mouse Gamma-protocadherin-C3 (also known as PCDH-gamma-C3, Protocadherin-43, PC-43, Protocadherin-2 and PCDH2, accession number Q91XX1); Human: 97% identity (83/85 amino acids identical); Rat: 97% identity (83/85 amino acids identical); No significant identity with other Gamma-protocadherin proteins |