ImmPress Horse anti-Rabbit IgG Kit

Artikelnummer: VEC-MP-7401
Artikelname: ImmPress Horse anti-Rabbit IgG Kit
Artikelnummer: VEC-MP-7401
Hersteller Artikelnummer: MP-7401
Alternativnummer: VEC-MP-7401-15, MP-7401-15, MP-7401-50,VEC-MP-7401-50
Hersteller: Vector Laboratories
Wirt: Equine
Kategorie: Kits/Assays
Spezies Reaktivität: Rabbit


The ImmPRESS polymerized reporter enzyme staining system uses novel conjugation and micropolymer chemistries to create a highly sensitive, ready-to-use, one-step, non-biotin detection system for immunohistochemistry and immunocytochemistry staining. This unique micropolymer of highly active enzyme (peroxidase or alkaline phosphatase) is attached to our affinity purified secondary antibodies, producing reagents with outstanding sensitivity and low background.


  • High sensitivity
  • Low background
  • One-step detection
  • Micropolymer technology
  • Enhanced accessibility to nuclear and membrane antigens
  • Ready-to-use in a convenient dropper bottle
  • Shorter assay time
  • Simplified multiple labeling

Kit Contents:

  • ImmPRESS (Peroxidase) Polymer Anti-Rabbit IgG Reagent (made in horse, ready-to-use)
  • 2.5% Normal Horse Serum for blocking (ready-to-use)

The ImmPRESS (15 ml) Kit will stain approximately 75-150 sections and the ImmPRESS (50 ml) Kit will stain approximately 250-500 sections.

Cat. No. MP-7401
Unit Size 15 ml, 50 ml
Country of Manufacture United States
Applications Immunohistochemistry / Immunocytochemistry, In situ hybridization, ELISAs
Technology Micropolymer Reagents
Detection Enzyme(s) Peroxidase
Conjugate Micropolymer HRP
Target Species Rabbit
Format Ready-to-Use

More Information

The peroxidase micropolymers of the ImmPRESS HRP polymer reagent limit steric interference and provide enhanced accessibility to the target, avoiding the disadvantages of other polymer systems that use large dextrans or other macromolecules as backbones. The result is crisp, strong staining of antibody targets, especially nuclear and membrane antigens (such as Ki67, estrogen receptor, bcl-2, CD3, CD8 and CD10) and greater sensitivity than other polymer systems.

Staining Procedure

The IHC immunostaining protocol is simple as shown in the diagram below. Following a blocking step with the diluted normal horse serum, sections are incubated with primary antibody. After a brief wash, the appropriate ImmPRESS Reagent is added to the sections and incubated for 30 minutes. Sections are again rinsed and the slides are developed with the peroxidase substrate of choice.

ImmPRESS Reagents in Single Labeling

Consider Species Cross-Reactivity

When choosing the optimal detection system for your application, it is important to consider not only the species of the primary antibody but also the species of the tissue. If the species of the primary antibody and the species of the tissue are closely related (e.g. rat and mouse), the secondary antibody may bind to endogenous IgG in the tissue section leading to background. The following options minimize background staining in these instances:

  • Use a secondary antibody specifically adsorbed to remove cross-reacting antibodies of closely-related species (e.g. ImmPRESS Anti-Mouse IgG, Rat Adsorbed).
  • Use the M.O.M.® ImmPRESS Kit (Cat. No. MP-2400) for applications of mouse primary antibodies on mouse tissue.


Learn more about the ImmPRESS Polymer Detection Systems in double labeling.

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