Anti-Interleukin 5 antibodies are used for the immunodetection of the protein encoded by the IL5 gene. In humans, the canonical protein has a reported length of 134 amino acid residues and a mass of 15.2 kDa. It is known to be a secreted protein. A member of the IL-5 protein family, it is known to be involved with immune response pathways and inflammatory response pathways. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include TRF, B-cell differentiation factor I, T-cell replacing factor, colony-stimulating factor, eosinophil, eosinophil differentiation factor, and EDF. Gene orthologs have been identified in the mouse, rat, bovine and chimpanzee species. Over 470 citations in the literature describe the use of Interleukin 5 antibodies in research. ELISA is a widely used application for these antibodies. In addition, Western Blot is also a common application.