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 Universal Quick HRP Kit (Peroxidase, Pan-Specific, Ready-to-Use) includes 50 ml of a stabilized, ready-to-use formulation of the ABC complex, 50 ml of biotinylated, affinity-purified horse pan-specific antibody (anti-mouse, rabbit, goat, rat, bovine and sheep IgG) and 50 ml of 2.5% normal horse serum. Not for use with rat, mouse or other rodent, rabbit, goat, bovine, or sheep tissue due to potential reactivity with endogenous IgG. Stains 250-500-1000 sections.