Anti-RTL5 antibodies are used in the immunodetection of the protein retrotransposon Gag like 5. In humans, the canonical protein has a reported length of 569 amino acid residues and a mass of 64.7 kDa. It is notably expressed in many tissues, such as the cerebral cortex, thyroid gland, and caudate. Synonyms for this target antigen include Sushi-Ichi retrotransposon homolog 8, mammalian retrotransposon-derived 5, retrotransposon gag domain containing 4, retrotransposon gag domain-containing protein 4, and retrotransposon Gag-like protein 5. RTL5 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. Some RTL5 antibodies may have been used in research and have associated citations. Western Blot, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are common applications for these antibodies.