Originating manufacturer of this product, immunogen description: Recombinant Protein Epitope Signature Tag (PrEST) antigen sequence SLPAQSVRAPATASNHPLNPGATPQPKFGAPDGPQQKTSLPSAHDFLSLPIMVPPDTSTLVSSASAASLSKPAIDTSDMNTTPPSKTVILQSTFVSRKEEYIRFYMGLP; Manufacturer approved use: IHC