Antibody data
- Antibody Data
- Antigen structure
- References [0]
- Comments [0]
- Validations
- Flow cytometry [1]
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Validation data
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- Product number
- 56-2239-41 - Provider product page
- Provider
- Invitrogen Antibodies
- Product name
- Anti-CD223 (LAG-3) Monoclonal Antibody (3DS223H), Alexa Fluor 700, eBioscience™
- Antibody type
- Monoclonal
- Antigen
- Other
- Description
- Description: This 3DS223H monoclonal antibody recognizes human CD223 also known as Lymphocyte Activation Gene 3 (LAG-3). LAG-3 is a 70-kDa surface glycoprotein belonging to the Ig superfamily with homology to CD4. LAG-3 binds to MHC class II with higher affinity than CD4 and is thought to be involved in the negative regulation of T cell activation and homeostatic proliferation. Surface expression of LAG-3 has been reported on activated T cells (including regulatory T cells) and NK cells. CD8+ T cells usually express LAG-3 at significantly higher levels than CD4+ T cells. Coexpression of LAG-3 and CD49b has been proposed to identify human and mouse Type 1 regulatory T cells (Tr1 cells). This 3DS223H antibody will recognize a formaldehyde-fixed epitope. Applications Reported: This 3DS223H antibody has been reported for use in flow cytometric analysis. Applications Tested: This 3DS223H antibody has been pre-titrated and tested by flow cytometric analysis of stimulated normal human peripheral blood cells. This can be used at 5 µL (0.06 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. Alexa Fluor® 700 emits at 723 nm and can be excited with the red laser (633 nm). Most instruments will require a 685 LP mirror and 710/20 filter. Please make sure that your instrument is capable of detecting this fluorochrome. Excitation: 633-647 nm; Emission: 723 nm; Laser: Red Laser. Filtration: 0.2 µm post-manufacturing filtered.
- Reactivity
- Human
- Host
- Mouse
- Conjugate
- Near infrared dye
- Isotype
- IgG
- Antibody clone number
- 3DS223H
- Vial size
- 25 Tests
- Concentration
- 5 µL/Test
- Storage
- 4° C, store in dark, DO NOT FREEZE!
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Supportive validation
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- Invitrogen Antibodies (provider)
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- Experimental details
- Normal human peripheral blood cells were stimulated for 3 days with Human IL-2 Recombinant Protein (Product # 14-8029-81), Anti-Human CD3, and Anti-Human CD28 Functional Grade Purifieds (Product # 16-0037-81 and Product # 16-0289-81). These cells were then surface stained with Anti-Human CD8a FITC (Product # 11-0087-42) and Mouse IgG1 K Isotype Control Alexa Fluor® 700 (Product # 56-4714-80) (left) or Anti-Human CD223 (LAG-3) Alexa Fluor® 700 (right). Viable cells in the lymphocyte gate, as determined by 7-AAD (Product # 00-6993-50), were used for analysis.
- Conjugate
- Near infrared dye