Anti-IL-7 antibodies enable researchers to detect and measure the IL-7 antigen in biological samples. This target is a reported synonym of the IL7 gene, which encodes interleukin 7. This protein is known to function in organ morphogenesis and cell to cell signaling, among other biological roles. The human version of IL-7 has a canonical amino acid length of 177 residues and a protein mass of 20.2 kilodaltons, although 3 isoforms have been identified. It is reported to be a secreted protein that is notably expressed in the testis, nasopharynx, fallopian tube, and bronchus. IL-7 is a member of the IL-7/IL-9 protein family. Over 110 citations in the literature describe the use of IL-7 antibodies in research. ELISA and Western Blot are common applications for these antibodies.