Anti-OX40 antibodies are protein reagents that detect specific antigens. The OX40 antigen is another term for the human protein TNF receptor superfamily member 4, encoded by the TNFRSF4 gene. The protein is a known receptor for TNFSF4/OX40L/GP34. Canonically, it has an amino acid length of 277 residues and a mass of 29.3 kilodaltons. Its subcellular localization is in the membrane and it is expressed in the lymph node and tonsil. Other alias names for OX40 include ACT35, CD134, and IMD16. These OX40 antibodies are widely used in Western Blot experiments, among other applications.