Ultra-LEAF™ Purified anti-mouse CD18 Antibody

Pricing & Availability
M18/2 (See other available formats)
Regulatory Status
Other Names
integrin β2, β2 integrin, ITGB2
Rat IgG2a, κ
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Product Citations
C57BL/6 mouse splenocytes stained with Ultra-LEAF™ purified M18/2, followed by anti-rat IgG FITC
  • M18slash2_LEAF_080207
    C57BL/6 mouse splenocytes stained with Ultra-LEAF™ purified M18/2, followed by anti-rat IgG FITC
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101417 100 µg £76
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101418 1 mg £102
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101419 5 mg £369
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101420 25 mg £964
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101421 50 mg £1611
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101422 100 mg £2314
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CD18 is a 95 kD protein, also known as integrin β2 subunit. It is expressed on all leukocytes. CD18, in association with integrin α chain CD11a, CD11b, and CD11c forms LFA-1, Mac-1, and αXβ2, respectively, and plays an important role in leukocytes adhesion. The CD18 integrin complexes bind ICAM-1 (CD54), ICAM-2 (CD102), ICAM-3 (CD50), iC3b, and fibrinogen. The M18/2 antibody is able to block tumor cell metastasis and enhance cell adhesion.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Antibody Type
Host Species
Mouse CTL glycoprotein
0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative. Endotoxin level is < 0.01 EU/µg of the protein (< 0.001 ng/µg of the protein) as determined by the LAL test.
The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.

FC - Quality tested
IP, WB, Block, Stim, IHC - Reported in the literature, not verified in house

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 1.0 µg per million cells in 100 µL volume. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

Additional reported applications (for the relevant formats) include: immunoprecipitation1,2, Western blotting1, in vitro and in vivo blocking of tumor cells metastasis or stimulation of cell-adhesion2-6, and immunohistochemical staining7 of acetone-fixed frozen sections and formalin-fixed paraffin-embedded sections. The Ultra-LEAF™ purified antibody (Endotoxin <0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 101417-101422).

Application References

(PubMed link indicates BioLegend citation)
  1. Sanchez-Madrid, et al. 1983. J. Exp. Med. 158:586. (IP, WB)
  2. Zahalka MA, et al. 1993. J. Immunol. 150:4466. (IP, Block, Stim)
  3. Zahalka MA, et al. 1994. Int. Immunol. 6:917. (Block, Stim)
  4. Ishida Y, et al. 1994. Cell. Immunol. 155:414. (Block, Stim)
  5. Isobe M, et al. 1992. Science 255:1125. (Block, Stim)
  6. Driessens MHE, et al. 1996. J. Leukoc. Biol. 60:758. (Block, Stim)
  7. Barlow SC, et al. 2004. Amer. J. Pathol. 165:1849. (IHC)
Product Citations
  1. Mattei F, et al. 2022. iScience. 25:105110. PubMed
AB_2832273 (BioLegend Cat. No. 101417)
AB_2832274 (BioLegend Cat. No. 101418)
AB_2832275 (BioLegend Cat. No. 101419)
AB_2832276 (BioLegend Cat. No. 101420)
AB_2832277 (BioLegend Cat. No. 101421)
AB_2832278 (BioLegend Cat. No. 101422)

Antigen Details

Integrin family, associates with CD11a, CD11b, CD11c, 95 kD

All leukocytes

ICAM-1 (CD54), ICAM-2 (CD102), ICAM-3 (CD50), iC3b, fibrinogen
Cell Type
Leukocytes, Tregs
Biology Area
Cell Adhesion, Cell Biology, Immunology, Innate Immunity
Molecular Family
Adhesion Molecules, CD Molecules
Antigen References

1. Barclay AN, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Anderson DC, et al. 1987. Annu. Rev. Med. 38:175.
3. Wilson RW, et al. 1993. J. Immunol. 151:1571.

Gene ID
16414 View all products for this Gene ID
View information about CD18 on UniProt.org

Related FAQs

Do you guarantee that your antibodies are totally pathogen free?

BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.

Does BioLegend test each Ultra-LEAF™ antibody by functional assay?

No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.

Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?

No, BioLegend does not test for pathogens in-house unless otherwise indicated.  However, we can recommend an outside vendor to perform this testing as needed.

Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?

We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.

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For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.


*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, www.biolegend.com/ordering#license). 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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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

  • FITC anti-mouse CD18

  • PE anti-mouse CD18

  • Purified anti-mouse CD18

  • Alexa Fluor® 647 anti-mouse CD18

  • Alexa Fluor® 594 anti-mouse CD18

  • Ultra-LEAF™ Purified anti-mouse CD18


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