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Safety Data Sheet (SDS) Pacific Blue Anti-human/mouse Cutaneous Lymphocyte Antigen CLA Antibody     Product Data Sheet (PDF)    
Pacific Blue™ Anti-human/mouse Cutaneous Lymphocyte Antigen (CLA) Antibody
2206535 25 µg $100.00       
2206540 100 µg $220.00       
Clone: HECA-452
Isotype: Rat IgM, κ
Workshop Number: V S075
Reactivity: Human, Mouse
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation: The antibody was purified by affinity chromatography, and conjugated with Pacific Blue™ under optimal conditions. The solution is free of unconjugated Pacific Blue™.
Concentration: 0.5 mg/ml
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

Application Notes:

The HECA-452 antibody cross-reacts with mouse skin homing lymphocytes4. Treatment of activated HUVEC cells with HECA-452 antibody inhibits lymphocyte adhesion. Additional reported applications (for the relevant formats) include: blocking of lymphocyte binding to E-selectin3, and immunohistochemistry1,2 of acetone-fixed frozen sections and formalin-fixed paraffin-embedded sections.

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 ≤0.25 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.

* Pacific Blue™ has a maximum emission of 455 nm when it is excited at 405 nm. Prior to using Pacific Blue™ conjugate for flow cytometric analysis, please verify your flow cytometer's capability of exciting and detecting the fluorochrome.

Application References:

1. Duijvestijn AM, et al. 1988. Am. J. Pathol. 130:147. (IHC)
2. Picker LJ, et al. 1991. Nature 349:796. (IHC)
3. Berg EL, et al. 1991. J. Exp. Med. 174:1461.
4. Borges E, et al. 1997. J. Biol. Chem. 272:28786.
5. Ren YL, et al. 2012. Am J Clin Pathol. 138:435. PubMed

Human peripheral blood lymphocytes stained

Human peripheral blood lymphocytes stained with HECA-452 Pacific Blue™


Cutaneous lymphocyte antigen (CLA) is a 140 kD homodimer protein recognized by a unique mAb, HECA-452. It is expressed on T cells in skin, subsets of peripheral blood memory T cells, NK cells, memory B cells and dendritic cells as well as on monocytes, granulocytes, and activated endothelial cells. CLA is a carbohydrate epitope of sialic acid and fucose-modified P-selectin glycoprotein ligand-1 (PSGL-1), a surface glycoprotein expressed on the majority of peripheral blood leukocytes. CLA is a ligand for E-selectin, P-selectin, and L-selectin. It plays a role in memory lymphocyte homing, tethering, and rolling.

Other Names: Cutaneous Lymphocyte-associated Antigen (CLA)
Structure: 140 kD, carbohydrate epitope of PSGL-1
Distribution: T cells in skin, subsets of peripheral blood T cells, NK cells, B cells and dendritic cells, monocytes, granulocytes
Function: Memory cells tethering and rolling
Ligand Receptor: E-selectin, P-selectin, L-selectin
Antigen References:

1. Picker LJ, et al. 1990. Am. J. Pathol. 136:1053.
2. Berg EL, et al. 1991. J. Exp. Med. 174:1461.
3. Fuhlbrigge RC, et al. 1997. Nature 389:978.
4. Tu L, et al. 1999. J. Exp. Med. 189:241.
5. Yoshino T, et al. 1999. Cell. Immunol. 197:39.
6. Chang SE, et al. 2003. Acta Derm-Venereol. 83:162.
7. Schakel K, et al. 2002. Immunity 17:289.
8. Fuhlbrigge RC, et al. 2002. J. Immunol. 168:5645.

This product is provided under an agreement between Life Technologies Corporation and Sony Biotechnology Inc. and the manufacture, use, sale or import of this product may be subject to one or more U.S. patents, pending applications, and corresponding non-U.S. equivalents, owned by and/or licensed to Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product in research and/or development conducted by the buyer (whether the buyer is an academic or for profit entity). The buyer cannot sell or otherwise transfer (a) this product (b) its components or (c) materials made using this product or its components to a third party or otherwise use this product or its components or materials made using this product or its components for Commercial Purposes. Commercial Purposes means any activity by a party for consideration and may include, but is not limited to (1) use of the product or its components in manufacturing, (2) use of the product or its components for therapeutic, diagnostic or prophylactic purposes, or (3) resale of the product or its components, whether or not such product or its components are resold for use in research. For information on purchasing a license to this product for any other use, contact Life Technologies Corporation, Molecular Probes Detection Technologies, Attn: Business Development, 29851 Willow Creek Road, Eugene, OR 97402, USA, Tel: (541) 465-8300. Fax: (541) 335-0504.