Anti-PRR9 antibodies are used in the immunodetection of the protein proline rich 9. In humans, the canonical protein has a reported length of 116 amino acid residues and a mass of 12.9 kDa. It is notably expressed in many tissues, such as the appendix, vagina, and adrenal gland. Synonyms for this target antigen include proline-rich protein 9. PRR9 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. Immunocytochemistry is the most common application for the PRR9 antibodies listed below. Western Blot, Immunofluorescence, and Immunohistochemistry are also common applications.