BRST-3 Monoclonal Antibody, Purified Antibody

Pricing & Availability
B72.3 (See other available formats)
Mouse IgG1, κ
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915203 6 mL $315
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915202 6 mL $340
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915201 1 mL $537
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TAG-72 (Tumor Associated Glycoprotein-72), a high molecular weight (220-400 kD) glycoprotein complex, is expressed by a wide variety of human adenocarcinomas.

This antibody is effective in immunohistochemistry (IHC).

The B72.3 monoclonal antibody recognizes TAG-72.

Concentrated Format:
Cat. No. 915201 (Formerly: SIG-3612-1000) [1 mL]

Prediluted Formats:
Cat. No. 915202 (Formerly: SIG-3612-16) [6 mL Level 1] is ready to use with automated strainers with Biotin-based detection systems such as USA Ultra Streptavidin Detection (Cat. No. 929501).

Cat. No. 915203 (Formerly: SIG-3612-26) [6 mL Level 2] is ready-to-use with Biotin-based detection systems such as USA Ultra Streptavidin Detection (Cat. No. 929501).

Product Details
Instructions for Use (pdf)

Product Details

Product Information

Intended Use:

In Vitro Diagnostic (IVD). Use in immunohistochemistry (IHC) test methods only.

The monoclonal antibody B72.3 is used for the in vitro examination of human biological samples using immunohistochemistry (IHC) methods for the qualitative identification of BRST-3. The clinical interpretation of any staining or its absence should be complemented by morphological studies and proper controls and should be evaluated within the context of the patient's clinical history and other diagnostic tests by a qualified pathologist.

This antibody was generated against a membrane-enriched fraction of a breast carcinoma metastatic to the liver.
Phosphate-buffered solution with BSA + 0.1% NaN3.
The antibody was purified by affinity chromatography.
Storage & Handling
Store between 2°C and 8°C.
Recommended Usage

Each lot of this antibody is quality control tested by immunohistochemical staining.

The optimal working dilution should be determined for each specific assay condition.
IHC: ≥1:40 (concentrated format) for Biotin based detection systems such as USA Ultra Streptavidin Detection (Cat. No. 929501).

Positive tissue (human): Breast carcinoma

Tissue Sections: Formalin-fixed, paraffin-embedded tissues
Pretreatment: Not required
Incubation: 20-60 minutes at room temperature

Application References

(PubMed link indicates BioLegend citation)
  1. Liu G, Dou S, Pretorius P, Liu X, Rusckowski M, Hnatowich D. Pretargeting CWR22 prostate tumor in mice with MORF-B72.3 antibody and radiolabeled cMORF. Eur J Nucl Med Mol Imaging 35(2): 272-280, 2008.
  2. Lyda MH, Weiss LM. Immunoreactivity for epithelial and neuroendocrine antibodies are useful in the differential diagnosis of lung carcinomas. Hum Pathol 31(8):980-7, 2000.
AB_2565167 (BioLegend Cat. No. 915203)
AB_2565166 (BioLegend Cat. No. 915202)
AB_2565165 (BioLegend Cat. No. 915201)


  1. Use appropriate personal protective equipment and safety practices per universal precautions when working with this reagent. Refer to the reagent safety data sheet.
  2. This antibody contains sodium azide. Follow federal, state and local regulations to dispose of this reagent. Sodium azide build-up in metal wastepipes may lead to explosive conditions; if disposing of reagent down wastepipes, flush with water after disposal.
  3. All specimens, samples and any material coming in contact with them should be considered potentially infectious and should be disposed of with proper precautions and in accordance with federal, state and local regulations.
  4. Do not use this reagent beyond the expiration date stated on the label.
  5. Do not use this reagent if it appears cloudy or if there is any change in the appearance of the reagent as these may be indication of possible deterioration.

Related FAQs

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Go To Top Version: 7    Revision Date: 08/21/2020

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*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
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