Anti-BAGE antibodies are used in the immunodetection of the protein B melanoma antigen. In humans, the canonical protein has a reported length of 43 amino acid residues and a mass of 4.8 kDa. It has been described to be a secreted protein. It is a member of the BAGE protein family. Synonyms for this target antigen include CT2.1, B melanoma antigen 1, antigen MZ2-BA, cancer/testis antigen 2.1, cancer/testis antigen family 2, member 1, and BAGE1.