Ultra-LEAF™ Purified anti-human CD1d Antibody

Pricing & Availability
51.1 (See other available formats)
Regulatory Status
Other Names
Mouse IgG2b, κ
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Product Citations
Human peripheral blood lymphocytes stained with CD19 FITC and purified CD1d (51.1) conjugated with PE (top) or mouse IgG2b PE isotype control (bottom).
  • Human peripheral blood lymphocytes stained with CD19 FITC and purified CD1d (51.1) conjugated with PE (top) or mouse IgG2b PE isotype control (bottom).
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350321 100 µg £163
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350322 1 mg £471
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CD1d is a MHC-like, type I transmembrane protein, member of the CD1 family and the immunoglobulin superfamily. On the cell surface, CD1d forms a heterodimer with β2-microglobulin. CD1d is expressed by antigen-presenting cells such as B cells, monocytes/macrophages, dendritic cells, and some non-lymphoid cells. Cortical thymocytes express CD1d but the expression is lost in mature T cells. CD1d presents lipid antigens to iNKT cells analogous to MHC molecule presentation of peptides to T cells.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Reported Reactivity
Antibody Type
Host Species
Human CD1d-Fc fusion
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 Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
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.

FC - Quality tested
IHC, IP, Stim, WB, Block - 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 application (for the relevant formats) include: immunohistochemical staining of frozen tissue sections1, Western blotting1,2, and induction of IL-12 production by crosslinking of CD1d3.

Application References

(PubMed link indicates BioLegend citation)
  1. Exley M, et al. 2000. Immunology 100:37. (IHC, WB)
  2. Durante-Mangoni E, et al. 2004. J. Immunol. 173:2159. (WB)
  3. Yue SC, et al. 2005. P. Natl. Acad. Sci. USA 102:11811. (Stim)
AB_2814280 (BioLegend Cat. No. 350321)
AB_2814281 (BioLegend Cat. No. 350322)

Antigen Details

MHC-like, type I transmembrane protein, member of the CD1 family and the immunoglobulin superfamily

Expressed by cortical thymocytes, monocytes, macrophages, dendritic cells, B cells (highly expressed on marginal zone B cells in particular), and in some non-lymphoid cells

Present lipid antigens to iNKT cells
When loaded with a lipid, is recognized by the Vα14i TCR from iNKT cells
Cell Type
B cells, Dendritic cells, Macrophages, Monocytes, Thymocytes
Biology Area
Immunology, Innate Immunity
Molecular Family
CD Molecules, MHC Antigens, TCRs
Antigen References

1. Koch M, et al. 2005. Nat. Immunol. 6:819.
2. Liu X, et al. 2010. P. Natl. Acad. Sci. USA 107:13010.
3. Zeissig S, et al. 2010. J. Clin. Invest. 120:2889.
4. Teige A, et al. 2010. J. Immunol. 185:345.

Gene ID
912 View all products for this Gene ID
View information about CD1d 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.


BioLegend Inc., 8999 BioLegend Way, San Diego, CA 92121 www.biolegend.com
Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

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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