Anti-cancer/testis antigen family 47 member B1 antibodies are used for the immunodetection of the protein encoded by the CT47B1 gene. In humans, the canonical protein has a reported length of 299 amino acid residues and a mass of 31.3 kDa. It is a member of the CT47 protein family. Other names for this target antigen include cancer/testis CT47 family, member 13, cancer/testis antigen 47.13, cancer/testis antigen 47B, cancer/testis antigen family 147, member B1, and cancer/testis antigen family 47 member B1.