Anti-IL-23 antibodies enable researchers to detect and measure the IL-23 antigen in biological samples. This target is a reported synonym of the IL23A gene, which encodes interleukin 23 subunit alpha. This protein is known to function in immune response pathways, among other biological roles. The human version of IL-23 has a canonical amino acid length of 189 residues and a protein mass of 20.7 kilodaltons. It is reported to be a secreted protein that is notably expressed in the tonsil, testis, lymph node, bone marrow, and appendix. This target antigen may also be known as IL23P19. Over 110 citations in the literature describe the use of IL-23 antibodies in research. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.