Anti-C18orf21 antibodies are used in the immunodetection of the protein chromosome 18 open reading frame 21. In humans, the canonical protein has a reported length of 220 amino acid residues and a mass of 24.8 kDa. Up to 2 different isoforms have been reported for this protein. It is a member of the UPF0711 protein family. Synonyms for this target antigen include HBV X-transactivated gene 13 protein, HBV X-transactivated protein 13, HBV XAg-transactivated protein 13, and UPF0711 protein C18orf21. C18orf21 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Western Blot is a widely used application for the C18orf21 antibodies listed below. In addition, Immunohistochemistry is also a common application.