- Clone
- M5E2 (See other available formats)
- Regulatory Status
- RUO
- Workshop
- III 329
- Other Names
- LPS receptor
- Isotype
- Mouse IgG2a, κ
- Ave. Rating
- Submit a Review
- Product Citations
- publications

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Human peripheral blood monocytes were stained with Ultra-LEAF™ purified CD14 (clone M5E2, filled histogram) or mouse IgG2a, κ isotype control (open histogram), followed by anti-mouse IgG FITC.
Cat # | Size | Price | Save |
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301861 | 100 µg | ¥37,330 | |
301862 | 1 mg | ¥108,360 |
CD14 is a 53-55 kD glycosylphosphatidylinositol (GPI)-linked membrane glycoprotein also known as LPS receptor. CD14 is expressed at high levels on monocytes and macrophages, and at lower levels on granulocytes. Some dendritic cell populations such as interfollicular dendritic cells, reticular dendritic cells, and Langerhans cells have also been reported to express CD14. As a high-affinity receptor for LPS, CD14 is involved in the clearance of gram-negative pathogens, and in the upregulation of adhesion molecules and expression of cytokines in monocytes and neutrophils.
Product DetailsProduct Details
- Verified Reactivity
- Human, Cynomolgus, Rhesus
- Reported Reactivity
- African Green, Capuchin Monkey, Cow, Chimpanzee, Common Marmoset, Cotton-topped Tamarin, Dog, Pigtailed Macaque, Squirrel Monkey
- Antibody Type
- Monoclonal
- Host Species
- Mouse
- Immunogen
- Full-length human CD14 protein
- Formulation
- 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.
- Preparation
- The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
- Concentration
- 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, please enter the lot number in our Concentration and Expiration Lookup or Certificate of Analysis online tools.
- 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.
- Application
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FC - Quality tested
CyTOF® - Verified - Recommended Usage
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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 ≤ 2.0 µg per million cells in 100 µl volume or 100 µl of whole blood. It is recommended that the reagent be titrated for optimal performance for each application.
- Application Notes
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The M5E2 antibody inhibits monocyte activation and cytokine production induced by LPS. Additional reported applications (for the relevant formats) include: immunohistochemical staining of acetone-fixed frozen sections, blocking of LPS stimulation4, and immunofluorescence microscopy5. Clone M5E2 is not recommended for immunohistochemical staining of 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. 301861 and 301862).
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Application References
(PubMed link indicates BioLegend citation) -
- McMichael A, et al. 1987. Leucocyte Typing III. Oxford University Press. New York.
- Knapp W, et al. Eds. 1989. Leucocyte Typing IV. Oxford University Press. New York. (IHC-F)
- Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
- Power CP, et al. 2004. J. Immunol. 173:5229. (Block)
- Williams KC, et al. 2001. J. Exp. Med. 193:905.
- Iwamoto S, et al. 2007. J. Immunol. 179:1449. (FC) PubMed
- Santer DM, et al. 2010. J. Immunol. 485:4739. PubMed
- Yoshino N, et al. 2000. Exp. Anim. (Tokyo) 49:97. (FC)
- Zizzo G, et al. 2012. J. Immunol. 189:3508. PubMed
- Stoeckius M, et al. 2017. Nat. Methods. 14:865. (PG)
- Peterson VM, et al. 2017. Nat. Biotechnol. 35:936. (PG)
- Product Citations
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- RRID
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AB_2814124 (BioLegend Cat. No. 301861)
AB_2814125 (BioLegend Cat. No. 301862)
Antigen Details
- Structure
- GPI-linked membrane glycoprotein, 53-55 kD
- Distribution
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Monocytes, macrophages, granulocytes (low)
- Function
- LPS receptor, clearance of Gram-negative pathogens
- Ligand/Receptor
- LPS
- Cell Type
- Granulocytes, Macrophages, Monocytes, Neutrophils
- Biology Area
- Cell Biology, Immunology, Innate Immunity, Neuroinflammation, Neuroscience
- Molecular Family
- CD Molecules
- Antigen References
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1. Stocks S, et al. 1990. Biochem. J. 268:275.
2. Wright S, et al. 1990. Science 249:1434. - Gene ID
- 929 View all products for this Gene ID
- UniProt
- View information about CD14 on UniProt.org
Related FAQs
- Do you guarantee that your antibodies are totally pathogen free?
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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?
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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?
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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?
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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.
Other Formats
View All CD14 Reagents Request Custom ConjugationCustomers Also Purchased
Compare Data Across All Formats
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.
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APC anti-human CD14
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FITC anti-human CD14
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PE anti-human CD14
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Purified anti-human CD14
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PE/Cyanine7 anti-human CD14
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Alexa Fluor® 488 anti-human CD14
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Alexa Fluor® 647 anti-human CD14
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Ultra-LEAF™ Purified anti-human CD14
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Pacific Blue™ anti-human CD14
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APC/Cyanine7 anti-human CD14
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Alexa Fluor® 700 anti-human CD14
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PerCP/Cyanine5.5 anti-human CD14
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Biotin anti-human CD14
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Brilliant Violet 421™ anti-human CD14
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Brilliant Violet 570™ anti-human CD14
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Brilliant Violet 605™ anti-human CD14
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Brilliant Violet 650™ anti-human CD14
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Brilliant Violet 711™ anti-human CD14
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Brilliant Violet 785™ anti-human CD14
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Brilliant Violet 510™ anti-human CD14
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Purified anti-human CD14 (Maxpar® Ready)
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PerCP anti-human CD14
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FITC anti-human CD14
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PE/Dazzle™ 594 anti-human CD14
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Pacific Blue™ anti-human CD14
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APC/Fire™ 750 anti-human CD14
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APC anti-human CD14
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TotalSeq™-A0081 anti-human CD14
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TotalSeq™-B0081 anti-human CD14
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TotalSeq™-C0081 anti-human CD14
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PE anti-human CD14
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PE/Cyanine5 anti-human CD14
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TotalSeq™-D0081 anti-human CD14
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APC/Fire™ 750 anti-human CD14
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GMP FITC anti-human CD14
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PE/Cyanine7 anti-human CD14
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GMP APC anti-human CD14
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GMP PE anti-human CD14
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PE/Dazzle™ 594 anti-human CD14
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GMP Pacific Blue™ anti-human CD14
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