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