The highly stable bond between avidin (A) and biotin (B) can be used to form a complex (ABC) between a biotinylated protein or other target and an avidin-conjugated detection enzyme. With more than 50,000 citations, Vector Laboratories ABC kits are trusted by immunohistochemistry (IHC) and immunocytochemistry (ICC) laboratories. Different variations of the ABC kit system can accommodate a wide array of targets and tissue species. This VECTASTAIN® Elite® ABC-HRP Reagent, R.T.U. (Peroxidase, Ready-to-Use) is a stabilized ready-to-use formulation of the VECTASTAIN Elite avidin/biotin-HRP complex that can be used with any biotinylated target. Typical sensitivity is 5X higher than the original ABC kits. The product is 50 ml of VECTASTAIN Elite ABC-HRP Reagent. Stains 500-1000 sections.