3,3"-Diaminobenzidine (DAB) Concentrate is a widely used chromogen for immunohistochemical staining and immunoblotting.When in the presence of the peroxidase enzyme, DAB produces a brown precipitate that is insoluble in alcohol.Stained slides may be mounted in any commercially available permanent mounting media.This product is available in a convenient two component form.For maximum flexibility, this product is available in bulk amounts or convenient dropper-top. Use with ScyTek catalog number ACC999, DAB Substrate. PolyTek，抗兔聚合HRP已开发，具有成本效益，可提供最清洁，最一致的染色。该系统基于聚合的过氧化物酶标记，该标记从等式中消除了生物素，从而消除了背景染色的主要原因。