EnVision™ FLEX Systems are simple, two-step visualization systems of high sensitivity. The FLEX+ kits have even greater sensitivity. They are all based on a unique enzyme-conjugated polymer backbone, which, in addition, also carries secondary antibody molecules.
The choice of visualization system should be guided by the degree of sensitivity that is needed, how complex the assay is, whether the tissue contains endogenous biotin, alkaline phosphatase or peroxidase, and several other individual factors.
* U.S. Patent 5,543,332 and European Patent 594,772.