Anti-SAs antibodies enable researchers to detect and measure the SAs antigen in biological samples. This target is a reported synonym of the TSPAN31 gene, which encodes tetraspanin 31. This protein is known to function in the regulation of cell proliferation, among other biological roles. The human version of SAs has a canonical amino acid length of 210 residues and a protein mass of 23.1 kilodaltons. It is reported to be localized in the membrane of cells and notably expressed in many tissues, such as the bronchus, urinary bladder, and adrenal gland. SAs is a member of the Tetraspanin (TM4SF) protein family. Western Blot is a widely used application for the SAs antibodies listed below. In addition, ELISA is also a common application.