With more than 50,000 citations, Vector Laboratories ABC kits are trusted by immunohistochemistry (IHC) and immunocytochemistry (ICC) laboratories. The VECTASTAIN ABC kit system is modular and different variations can accommodate a wide array of primary antibody and tissue species. This kit uses horseradish peroxidase (HRP) as a detection enzyme and includes a secondary antibody that targets rat IgG primary antibodies. The ABC complex, once formed, is stable and can be used for several days after preparation. Includes: 3 ml normal rabbit serum, 1 ml biotinylated goat anti-rat IgG secondary antibody, 2 ml Reagent A (avidin) and 2 ml Reagent B (biotinylated HRP). Stains 1000-2000 sections.