UltraBrite?黃色IHC色原(HRP)產品是The UltraBrite? yellow IHC chromogen (HRP) is a substrate chromogen system designed to be used for either immunohistochemistry (IHC) or ISH when utilizing horseradish peroxidase. UltraBrite? yellow IHC chromogen (HRP) produces a distinct bright yellow that can easily be distinguished from other stains.