FITC anti-human CD43 Antibody

Pricing & Availability
MEM-59 (See other available formats)
Regulatory Status
Other Names
Leukosialin, leuokocyte sialoglycoprotein, sialophorin, galactoglyprotein
Mouse IgG1, κ
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Product Citations
Human peripheral blood lymphocytes stained with MEM-59 FITC
  • MEM-59_FITC_062707
    Human peripheral blood lymphocytes stained with MEM-59 FITC
See FITC spectral data
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315203 25 tests $70.00
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315204 100 tests $160.00
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CD43 is a 95-135 kD type I transmembrane glycoprotein known as leukosialin, leukocyte sialoglycoprotein, sialophorin, and galactoglyprotein. It is expressed at high levels on the surface of all leukocytes (except on resting B cells) and at low levels on platelets, negative on erythrocytes. The expression of CD43 on T cells and neutrophils is rapidly downregulated by proteolytic shedding after activation with various stimuli. The soluble form of CD43 is present in human serum. It has been reported that CD43 plays a role in anti-adhesive functions, but also mediates adhesion via its interaction with CD54 or some lectins. Similarly, CD43 is implicated in anti-apoptotic and proapoptotic signaling.

Product Details
Technical data sheet

Product Details

Antibody Type
Host Species
Human T lymphocytes
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and 0.2% (w/v) BSA (origin USA).
The antibody was purified by affinity chromatography, and conjugated with FITC under optimal conditions.
Lot-specific (please contact technical support for concentration and total µg amount, or use our Lookup tool if you have a lot number.)
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

FC - Quality tested

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 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.

Excitation Laser
Blue Laser (488 nm)
Application Notes

Additional reported applications (for the relevant formats) include: immunoprecipitation, Western blotting, immunohistochemistry of formalin-fixed paraffin-embedded sections, and T cell activationSup>1,2.

Application References

(PubMed link indicates BioLegend citation)
  1. Olweus J, et al. 1993. J. Immunol. 151:707.
  2. Alvarado M, et al. 1995. Eur. J. Immunol. 25:1051.
  3. Ye L, et al. 2013. Stem Cell Transl Med. 2:558. PubMed
Product Citations
  1. Ye L, et al. 2013. Stem Cells Trans Med. 2:558. PubMed
  2. Fu Y, et al. 2021. Cell Reports. 36(2):109344. PubMed
AB_389246 (BioLegend Cat. No. 315203)
AB_389247 (BioLegend Cat. No. 315204)

Antigen Details

Type I membrane protein, 95-135 kD, soluble form exists in serum

Thymocytes, T cells, neutrophils, plasma cells, myelomas

Anti-adhesion, mediate adhesion, regulate T cell activation and neutrophil migration, antiapoptotic and proapoptotic signaling
CD54, Counterreceptor for SN/Siglec-1
Highly glycosylated
Cell Type
Thymocytes, T cells, Neutrophils, Plasma cells, B cells
Biology Area
Molecular Family
Adhesion Molecules, CD Molecules
Antigen References

1. Leukocyte Typing IV. Knapp W, et al. (Eds.) Oxford University Press (1989)
2. Stephanova I, et al. 1989. Mol. Immunol. 26:153.
3. Alvarado M, et al. 1995. Eur. J. Immunol. 25:1051.
4. Deckert M, et al. 1992. Eur. J. Immunol. 22:2943
5. Cermak L, et al. 2002. J. Biol. Chem. 227:7955.

Gene ID
6693 View all products for this Gene ID
View information about CD43 on

Related FAQs

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Go To Top Version: 1    Revision Date: 11/30/2012

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, 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.

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