Anti-SAGE antibodies are used in antigen-specific immunodetection in biological samples. The target SAGE is a known alias name of the protein sarcoma antigen 1, encoded by the SAGE1 gene in humans. This protein has a canonical amino acid length of 904 residues and a mass of 99.2 kDa. In terms of tissue expression, it is notably expressed in bladder, lung, head and neck carcinomas.