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48274
CD4 (EP204) Rabbit mAb
Primary Antibodies
Monoclonal Antibody

CD4 (EP204) Rabbit mAb #48274

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  1. IHC
Immunohistochemistry Image 1: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human lymphoma using CD4 (EP204) Rabbit mAb performed on the Leica® BOND™ Rx. 

Immunohistochemistry Image 2: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human prostate carcinoma using CD4 (EP204) Rabbit mAb performed on the Leica® BOND™ Rx.

Immunohistochemistry Image 1: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human colon carcinoma using CD4 (EP204) Rabbit mAb.

Immunohistochemistry Image 2: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human hepatocellular carcinoma using CD4 (EP204) Rabbit mAb.

Immunohistochemistry Image 3: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human lung adenocarcinoma using CD4 (EP204) Rabbit mAb.

Immunohistochemistry Image 4: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human endometrioid adenocarcinoma using CD4 (EP204) Rabbit mAb.

Immunohistochemistry Image 5: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded HuT 102 cell pellet (left, positive) or PC-3 cell pellet (right, negative) using CD4 (EP204) Rabbit mAb.

Immunohistochemistry Image 6: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human gastric adenocarcinoma using CD4 (EP204) Rabbit mAb.

Immunohistochemistry Image 7: CD4 (EP204) Rabbit mAb

Immunohistochemical analysis of paraffin-embedded human tonsil using CD4 (EP204) Rabbit mAb.

To Purchase # 48274S
Product # Size Price
48274S
100 µl N/A

Supporting Data

REACTIVITY H
SENSITIVITY Endogenous
MW (kDa)
Source/Isotype Rabbit IgG

Application Key:

  • W-Western
  • IP-Immunoprecipitation
  • IHC-Immunohistochemistry
  • ChIP-Chromatin Immunoprecipitation
  • IF-Immunofluorescence
  • F-Flow Cytometry
  • E-P-ELISA-Peptide

Species Cross-Reactivity Key:

  • H-Human
  • M-Mouse
  • R-Rat
  • Hm-Hamster
  • Mk-Monkey
  • Mi-Mink
  • C-Chicken
  • Dm-D. melanogaster
  • X-Xenopus
  • Z-Zebrafish
  • B-Bovine
  • Dg-Dog
  • Pg-Pig
  • Sc-S. cerevisiae
  • Ce-C. elegans
  • Hr-Horse
  • All-All Species Expected

Product Usage Information

Application Dilution
IHC-Leica® Bond™ 1:50 - 1:200
Immunohistochemistry (Paraffin) 1:50 - 1:200

Storage

Supplied in a PBS-based buffer with ~1% BSA and less than 0.1% sodium azide. Stable for 12 months when stored at 4°C. Do not aliquot the antibody.

Protocol

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Immunohistochemistry (Leica® BOND™)

NOTE: Please see product datasheet or product webpage for appropriate antibody dilution^.

  Step Reagents Time/Temperature
1 Dewax BOND™ Dewax Solution, 100% Alcohol, BOND™ Wash Solution Pre-programmed Leica® BOND™ 
2 Antigen Retrieval  BOND™ Epitope Retrieval ER2 Solution 20 min., 100˚C | Protocol: HIER 20 min with ER2
3 Peroxide Block Refine Detection Kit Peroxide Block* 5 min.
  WASH BOND™ Wash Solution  3x 0:00 min.
4 Protein Block (optional) #5425 NGS or #15019 Animal-Free Blocking Solution   20 min. 
5 Primary Antibody^ Dilute in #8112 SignalStain® Antibody Diluent 30 min. 
  WASH BOND™ Wash Solution  3x 2:00 min.
NA Post Primary Mouse Linker Refine Detection Kit Post Primary*  Not Applied 
6 Secondary Detection Refine Detection Kit Polymer*  10 min. 
  WASH BOND™ Wash Solution/Deionized Water Custom (see below)
7a Visualization Refine Detection Kit Mixed DAB Refine*  0:00 min. 
7b Visualization Refine Detection Kit Mixed DAB Refine*  10 min. 
  WASH Deionized Water 3x 0:00 min.
8 Counterstain Refine Detection Kit Hematoxylin*  5 min. 
  WASH Deionized Water 0:00 min. 
  WASH BOND™ Wash Solution  0:00 min. 
  WASH Deionized Water 0:00 min. 
9 Dehydration (Offline):    
  Incubate sections in 95% ethanol two times for 10 seconds each.  
  Repeat in 100% ethanol, incubating sections two times for 10 seconds each.  
  Repeat in xylene, incubating sections two times for 10 seconds each.  
10 Mount sections with coverslips and #14177 SignalStain® Mounting Medium  
       
  Optional Custom wash:  BOND™ Wash Solution 2:00
    BOND™ Wash Solution Dispenser Type: OPEN 0:00
    BOND™ Wash Solution 2:00
    BOND™ Wash Solution Dispenser Type: OPEN 0:00
    BOND™ Wash Solution 0:00
    Deionized Water 0:00

*Reagent included in BOND™ Polymer Refine Detection Kit (Catalog No: DS9800)

LEICA® is a registered trademark of Leica Microsystems IR GmbH.

BOND™ is a trademark of Leica Biosystems Melbourne Pty. Ltd. No affiliation or sponsorship between CST and Leica Microsystems IR GmbH or Leica Biosystems Melbourne Pty. Ltd is implied.

posted August 2018

revised September 2018

Protocol Id: 1444

Immunohistochemistry (Paraffin)

A. Solutions and Reagents

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.

  1. Xylene.
  2. Ethanol, anhydrous denatured, histological grade (100% and 95%).
  3. Deionized water (dH2O).
  4. Hematoxylin (optional).
  5. Wash Buffer:
    1. 1X Tris Buffered Saline with Tween® 20 (TBST): To prepare 1L 1X TBST add 100 ml 10X Tris Buffered Saline with Tween® 20 (#9997) to 900 ml dH2O, mix.
  6. SignalStain® Antibody Diluent (#8112).
  7. 1X Citrate Unmasking Solution: To prepare 250 mL of 1X citrate unmasking solution, dilute 25 ml of SignalStain® Citrate Unmasking Solution (10X) (#14746) with 225 mL of dH2O.
  8. 3% Hydrogen Peroxide: To prepare 100 ml, add 10 ml 30% H2O2 to 90 ml dH2O.
  9. Blocking Solution: TBST/5% Normal Goat Serum or 1X Animal-Free Blocking Solution.
    1. TBST/5% Normal Goat Serum: to 5 ml 1X TBST, add 250 µl Normal Goat Serum (#5425).
    2. 1X Animal-Free Blocking Solution: to 4 mL of dH2O add 1 ml of Animal-Free Blocking Solution (5X) (#15019).
  10. Detection System: SignalStain® Boost IHC Detection Reagents (HRP, Rabbit #8114).
  11. Substrate: SignalStain® DAB Substrate Kit (#8059).
  12. Hematoxylin: Hematoxylin (#14166).
  13. Mounting Medium: SignalStain® Mounting Medium (#14177).

B. Deparaffinization/Rehydration

NOTE: Do not allow slides to dry at any time during this procedure.

  1. Deparaffinize/hydrate sections:
    1. Incubate sections in three washes of xylene for 5 min each.
    2. Incubate sections in two washes of 100% ethanol for 10 min each.
    3. Incubate sections in two washes of 95% ethanol for 10 min each.
  2. Wash sections two times in dH2O for 5 min each.

C. Antigen Unmasking

For Citrate: Heat slides in a microwave submersed in 1X citrate unmasking solution until boiling is initiated; follow with 10 min at a sub-boiling temperature (95°-98°C). Cool slides on bench top for 30 min.

D. Staining

  1. Wash sections in dH2O three times for 5 min each.
  2. Incubate sections in 3% hydrogen peroxide for 10 min.
  3. Wash sections in dH2O two times for 5 min each.
  4. Wash sections in wash buffer for 5 min.
  5. Block each section with 100–400 µl of preferred blocking solution for 1 hr at room temperature.
  6. Remove blocking solution and add 100–400 µl primary antibody diluted in SignalStain® Antibody Diluent (#8112) to each section. Incubate overnight at 4°C.
  7. Equilibrate SignalStain® Boost Detection Reagent (HRP, Rabbit #8114) to room temperature.
  8. Remove antibody solution and wash sections with wash buffer three times for 5 min each.
  9. Cover section with 1–3 drops SignalStain® Boost Detection Reagent (HRP, Rabbit #8114) as needed. Incubate in a humidified chamber for 30 min at room temperature.
  10. Wash sections three times with wash buffer for 5 min each.
  11. Add 1 drop (30 µl) SignalStain® DAB Chromogen Concentrate to 1 ml SignalStain® DAB Diluent and mix well before use.
  12. Apply 100–400 µl SignalStain® DAB to each section and monitor closely. 5–10 min generally provides an acceptable staining intensity.
  13. Immerse slides in dH2O.
  14. If desired, counterstain sections with hematoxylin (#14166).
  15. Wash sections in dH2O two times for 5 min each.
  16. Dehydrate sections:
    1. Incubate sections in 95% ethanol two times for 10 sec each.
    2. Repeat in 100% ethanol, incubating sections two times for 10 sec each.
    3. Repeat in xylene, incubating sections two times for 10 sec each.
  17. Mount sections with coverslips and mounting medium (#14177).
DETECTION REAGENT/SUBSTRATE COMPATIBILITY
RECOMMENDED
DETECTION REAGENTS
SignalStain® Boost IHC Detection Reagent (HRP, Rabbit) #8114 SignalStain® Boost IHC Detection Reagent (AP, Rabbit) #18653
COMPATIBLE
CHROMOGEN
SignalStain® DAB Substrate Kit #8059 SignalStain® Vibrant Red Alkaline Phosphatase Substrate Kit #76713
SignalStain® Vivid Purple Peroxidase Substrate Kit #96632  

NOTE: Use of detection reagents other than those specified in this protocol may require further optimization of the primary antibody to account for the different sensitivities of the detection reagents.

posted February 2010

revised April 2020

Protocol Id: 1989

Specificity / Sensitivity

CD4 (EP204) Rabbit mAb recognizes endogenous levels of CD4 protein.

Species Reactivity:

Human

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to the residues of human CD4 protein.

Background

Cluster of Differentiation 4 (CD4) is a glycoprotein composed of an amino-terminal extracellular domain (four domains: D1-D4 with Ig-like structures), a transmembrane part, and a short cytoplasmic tail. CD4 is expressed on the surface of T helper cells, regulatory T cells, monocytes, macrophages, and dendritic cells, and plays an important role in the development and activation of T cells. On T cells, CD4 is the co-receptor for the T cell receptor (TCR), and these two distinct structures recognize the Antigen–Major Histocompatibility Complex (MHC). Specifically, the D1 domain of CD4 interacts with the β2-domain of the MHC class II molecule. CD4 ensures specificity of the TCR–antigen interaction, prolongs the contact between the T cell and the antigen presenting cell, and recruits the tyrosine kinase Lck, which is essential for T cell activation (1).

  1. Zamoyska, R. (1994) Immunity 1, 243-46.

Pathways & Proteins

Explore pathways + proteins related to this product.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST's products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST's Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
SignalStain is a trademark of Cell Signaling Technology, Inc.
BOND is a trademark of Leica Biosystems Melbourne Pty. Ltd. No affiliation or sponsorship between CST and Leica Microsystems IR GmbH or Leica Biosystems Melbourne Pty. Ltd is implied.
LEICA is a registered trade​mark of Leica Microsystems IR GmbH.
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