Anti-SELW antibodies are used in antigen-specific immunodetection in biological samples. The target SELW is a known alias name of the protein selenoprotein W, encoded by the SELENOW gene in humans. This 87-amino acid residue protein is reported to play a role as a glutathione (GSH)-dependent antioxidant. It is localized to the cytoplasm of the cell. In terms of tissue expression, it is widely expressed across many tissue types. Other synonyms for SELW include SEPW1 and selenoprotein W, 1.