Anti-HUP2 antibodies enable researchers to detect and measure the HUP2 antigen in biological samples. This target is a reported synonym of the PAX3 gene, which encodes paired box 3. This protein is known to function in organ morphogenesis and the apoptotic pathway, among other biological roles. The human version of HUP2 has a canonical amino acid length of 479 residues and a protein mass of 53 kilodaltons, although 8 isoforms have been identified. It is reported to be localized in the nucleus of cells. This target antigen may also be known as CDHS.