StarBright UltraViolet 740 anti-human IFN-γ antibody, IFN-γ, 4S.B3

Pricing & Availability

Clone: 4S.B3 (See other available formats)
Regulatory Status: RUO
Other Names: Interferon-γ, Immune interferon, Type II interferon, T cell interferon, Macrophage-activating factor (MAF), IFN-g, IFN-gamma
Isotype: Mouse IgG1, κ
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Product Citations: publications

4SB3_UCHT1_HIB19_SBUV740_IFN-y_BasicPanel_071125 — PMA + ionomycin-stimulated (6 hours) human peripheral blood mononuclear cells were fixed, permeabilized, and surface stained with anti-human CD3 (clone UCHT1) APC. Cells were then intracellularly stained with anti-human IFN-γ (clone 4S.B3) StarBright UltraViolet 740 (left) or left surface-stained only (right). Data shown are gated on the lymphocyte population.

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502562

100 tests

300€

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This StarBright conjugate is available for purchase as part of a multicolor flow cytometry panel. To order, add compatible products to your shopping cart, or use our Panel Selector tool to build your ideal panel. For ordering assistance or to request a sample, contact your local field representative.

This product is also available for direct purchase within a StarBright Basic Panel, which combines a minimal set of pre-selected compatible reagents.

Description

Interferon-γ is a potent multifunctional cytokine which is secreted primarily by activated NK cells and T cells. Originally characterized based on anti-viral activities, IFN-γ also exerts anti-proliferative, immunoregulatory, and proinflammatory activities. IFN-γ can upregulate MHC class I and II antigen expression by antigen-presenting cells.

Product Details

Technical Data Sheet (pdf)

Product Details

Verified Reactivity: Human
Reported Reactivity: Chimpanzee, Baboon, Cynomolgus, Rhesus
Antibody Type: Monoclonal
Host Species: Mouse
Immunogen: Partially purified, native human IFN-γ
Formulation: Phosphate-buffered saline, containing 0.09% sodium azide, 0.05% Tween 20, 0.1% PEG 3350, 0.1% Pluronic F68, and 1% BSA (origin USA)
Preparation: The antibody was purified by affinity chromatography and conjugated with StarBright UltraViolet 740 under optimal conditions.
Concentration: Lot-specific (to obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.) The concentration relates to the dye component of the conjugate.
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.
Application: ICFC - Quality tested
Recommended Usage: Each lot of this antibody is quality control tested by intracellular 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. It is recommended that the reagent be titrated for optimal performance for each application.

* StarBright UltraViolet 740 has a maximum excitation of 343 nm and a maximum emission of 737 nm.

StarBright dyes are powered by Bio-Rad®. STARBRIGHT is a trademark of Bio-Rad Laboratories, Inc.
Excitation Laser: Ultraviolet Laser (355 nm)
Application Notes: ELISA or ELISPOT Detection⁵: The biotinylated 4S.B3 antibody is useful as a detection antibody for a sandwich ELISA or ELISPOT assay, when used in conjunction with purified NIB42 antibody (Cat. No. 502402/502404) or purified MD-1 antibody (Cat. No. 507502/507513) as the capture antibody.
Flow Cytometry^3,4,6-8: The fluorochrome-labeled 4S.B3 antibody is useful for intracellular immunofluorescent staining and flow cytometric analysis to identify IFN-γ -producing cells within mixed cell populations.
Additional reported applications (for the relevant formats) include: neutralization^1,2, Western blotting, immunohistochemical staining of paraformaldehyde-fixed, saponin-treated tissue sections, and immunocytochemistry. The 4S.B3 antibody can neutralize the bioactivity of natural or recombinant IFN-γ.
Note: For testing human IFN-γ in serum or plasma, BioLegend's ELISA Max™ Sets (Cat. No. 430101 to 430106) are specially developed and recommended.

Antigen Details

Structure: Cytokine; dimer; 20-25 kD (Mammalian)
Bioactivity: Antiviral/antiparasitic activities; inhibits proliferation; enhances MHC class I and II expression on APC
Cell Sources: CD8⁺ and CD4⁺ T cells, NK cells
Cell Targets: T cells, B cells, macrophages, NK cells, endothelial cells, fibroblasts
Receptors: IFN-γRα (CDw119) dimerized with IFN-γRβ (AF-1)
Cell Type: Tregs
Biology Area: Cell Biology, Immunology, Neuroinflammation, Neuroscience
Molecular Family: Cytokines/Chemokines
Antigen References: 1. Fitzgerald K, et al. Eds. 2001. The Cytokine FactsBook. Academic Press, San Diego.
2. De Maeyer E, et al. 1992. Curr. Opin. Immunol. 4:321.
3. Farrar M, et al. 1993. Annu. Rev. Immunol. 11:571.
4. Gray P, et al. 1987. Lymphokines 13:151.
Regulation: Upregulated by IL-2, FGF-basic, EGF; downregulated by vitamin D3 or DMN; labile at pH2
Gene ID: 3458 View all products for this Gene ID
UniProt: View information about IFN-gamma on UniProt.org

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Intracellular Flow Cytometry Staining Protocol

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Related FAQs

What is a “StarBright panel”?: A StarBright panel is a multiplex panel that includes at least one StarBright conjugate.
Will my StarBright panel be provided as a cocktail?: StarBright products purchased as part of a panel or StarBright Basic Panel will be provided in individual vials. To order premade cocktails, please contact our Custom Solutions Team.
Are StarBright GMP/ASR products available?: StarBright ASR and GMP products are coming soon.
Are StarBright custom products available?: Yes, please contact our Custom Solutions Team.
Will StarBright isotype controls be offered?: We are not planning to offer StarBright isotype controls at this time. Fluorescence Minus One (FMO) controls should be used to define gating boundaries.
What amount of a StarBright conjugate should I use?: Antibody conjugates should be titrated for optimal performance in each application. To directly compare performance with a traditional or polymer-conjugated antibody, we recommend using the same volume of each product for analysis. Due to differences in the quantification of product mass, StarBright Dyes are prepared in equivalent volumes.
Why shouldn’t I compare the mass (μg) of a StarBright conjugate to a traditional or polymer conjugate?: For StarBright conjugates, the reported mass refers to the mass of the dye component. For traditional conjugates, the reported mass refers to the mass of the antibody component. This is because traditional conjugates have multiple dye molecules attached to one antibody, while StarBright conjugates have multiple antibodies attached to a single StarBright Dye.

Other Formats

View All IFN-γ Reagents Request Custom Conjugation

Description	Clone	Applications
PE anti-human IFN-γ	4S.B3	ICFC
APC anti-human IFN-γ	4S.B3	ICFC
FITC anti-human IFN-γ	4S.B3	ICFC
Biotin anti-human IFN-γ	4S.B3	ELISA Detection,ELISPOT Detection,ICFC
Purified anti-human IFN-γ	4S.B3	ELISA,WB,ICFC
Alexa Fluor® 488 anti-human IFN-γ	4S.B3	ICFC
Alexa Fluor® 647 anti-human IFN-γ	4S.B3	ICFC
Alexa Fluor® 700 anti-human IFN-γ	4S.B3	ICFC
Pacific Blue™ anti-human IFN-γ	4S.B3	ICFC
PerCP/Cyanine5.5 anti-human IFN-γ	4S.B3	ICFC
APC/Cyanine7 anti-human IFN-γ	4S.B3	ICFC
PE/Cyanine7 anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 421™ anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 570™ anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 605™ anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 650™ anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 711™ anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 785™ anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 510™ anti-human IFN-γ	4S.B3	ICFC
PE/Dazzle™ 594 anti-human IFN-γ	4S.B3	ICFC
APC/Fire™ 750 anti-human IFN-γ	4S.B3	ICFC
PerCP anti-human IFN-γ	4S.B3	ICFC
Brilliant Violet 750™ anti-human IFN-γ	4S.B3	ICFC
KIRAVIA Blue 520™ anti-human IFN-γ Antibody	4S.B3	ICFC
Spark NIR™ 685 anti-human IFN-γ Antibody	4S.B3	ICFC
APC anti-human IFN-γ	4S.B3	ICFC
Spark Blue™ 515 anti-human IFN-γ	4S.B3	ICFC
Spark UV™ 387 anti-human IFN-γ	4S.B3	ICFC
Spark PLUS UV395™ anti-human IFN-γ	4S.B3	ICFC
PE anti-human IFN-γ	4S.B3	ICFC
GMP APC anti-human IFN-γ	4S.B3	ICFC
StarBright UltraViolet 740 anti-human IFN-γ	4S.B3	ICFC

Certificate of Analysis

Go To Top Version: 1 Revision Date: 06/05/2025

For Research Use Only. Not for diagnostic or therapeutic use.

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

BioLegend, the BioLegend logo, and all other trademarks are property of BioLegend, Inc. or their respective owners, and all rights are reserved.

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Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
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