UltraBrite™黑色IHC色原(HRP)产品是UltraBrite™ black IHC chromogen (HRP) is a substrate-chromogen system designed to be used for either immunohistochemistry (IHC) or ISH when utilizing horseradish peroxidase. UltraBrite™ black IHC chromogen (HRP) produces a sharply contrasting ebony black color that can easily be distinguished from other stains.