Sheep Anti-S. aureus Exfoliative Toxin A Polyclonal antibody for ELISA. Suitable for use in ELISA. Each laboratory should determine an optimum working titer for use in its particular application. Other applications have not been tested but use in such assays should not necessarily be excluded.Staphylococcus aureus Exfoliative Toxin A (ETA) has serine protease-like properties and binds to the skin protein profilaggrin. It cleaves substrates after acidic residues. Exfoliative toxins cause impetigous diseases commonly referred as staphylococcal scalded skin syndrome (SSSS).