Anti-CT3.6 antibodies enable researchers to detect and measure the CT3.6 antigen in biological samples. This target is a reported synonym of the MAGEB4 gene, which encodes MAGE family member B4. This protein is known to function in the regulation of transcription, among other biological roles. The human version of CT3.6 has a canonical amino acid length of 346 residues and a protein mass of 38.9 kilodaltons. It is reported to be localized in the cytoplasm of cells and notably expressed in the epididymis and testis.