Anti-FN antibodies enable researchers to detect and measure the FN antigen in biological samples. This target is a reported synonym of the FN1 gene, which encodes fibronectin 1. This protein is known to function in angiogenesis and cell adhesion, among other biological roles. The human version of FN has a canonical amino acid length of 2477 residues and a protein mass of 272.3 kilodaltons, although 17 isoforms have been identified. It is reported to be localized in the extracellular matrix and is secreted of cells and notably expressed in many tissues, such as the endometrium and kidney. Other names for this target antigen include CIG, ED-B, and FINC. Some FN antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.