- FN50 (See other available formats)
- Regulatory Status
- IV A91
- Other Names
- Very Early Activation Antigen (VEA), Activation inducer molecule (AIM)
- Mouse IgG1, κ
- Ave. Rating
- Submit a Review
- Product Citations
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CD69 is a 27-33 kD type II transmembrane protein also known as activation inducer molecule (AIM), very early activation antigen (VEA), and MLR3. It is a member of the C-type lectin family, expressed as a disulfide-linked homodimer. Other members of this receptor family include NKG2, NKR-P1 CD94, and Ly49. CD69 is transiently expressed on activated leukocytes including T cells, thymocytes, B cells, NK cells, neutrophils, and eosinophils. CD69 is constitutively expressed by a subset of medullary mature thymocytes, platelets, mantle B cells, and certain CD4+ T cells in germinal centers of normal lymph nodes. CD69 is involved in early events of lymphocyte, monocyte, and platelet activation, and has a functional role in redirected lysis mediated by activated NK cells.Product Details
- Verified Reactivity
- Reported Reactivity
- African Green, Baboon, Chimpanzee, Cynomolgus, Pigtailed Macaque, Rhesus
- Antibody Type
- Host Species
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
- The antibody was purified by affinity chromatography and conjugated with Alexa Fluor® 647 under optimal conditions.
- Lot-specific (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, and protected from prolonged exposure to light. Do not freeze.
FC - Quality tested
SB - 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 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.
* Alexa Fluor® 647 has a maximum emission of 668 nm when it is excited at 633nm / 635nm.
Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.
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- Excitation Laser
Red Laser (633 nm)
- Application Notes
Additional reported applications (for the relevant formats) include: immunohistochemical staining of acetone-fixed frozen tissue sections2, immunofluorescence microscopy3, and spatial biology (IBEX)8,9.
- Additional Product Notes
Iterative Bleaching Extended multi-pleXity (IBEX) is a fluorescent imaging technique capable of highly-multiplexed spatial analysis. The method relies on cyclical bleaching of panels of fluorescent antibodies in order to image and analyze many markers over multiple cycles of staining, imaging, and, bleaching. It is a community-developed open-access method developed by the Center for Advanced Tissue Imaging (CAT-I) in the National Institute of Allergy and Infectious Diseases (NIAID, NIH).
- Application References
- Knapp WB, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York.
- Sakkas LI, et al. 1998. Clin. and Diag. Lab. Immunol. 5:430. (IHC)
- Kim JR, et al. 2005. BMC Immunol. 6:3. (IF)
- Verjans GM, et al. 2007. P. Natl. Acad. Sci. USA 104:3496.
- Lu H, et al. 2009. Toxicol Sci. 112:363. (FC) PubMed
- Thakral D, et al. 2008. J. Immunol. 180:7431. (FC) PubMed
- Yoshino N, et al. 2000. Exp. Anim. (Tokyo) 49:97. (FC)
- Radtke AJ, et al. 2020. Proc Natl Acad Sci USA. 117:33455-33465. (SB) PubMed
- Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
- Product Citations
AB_528871 (BioLegend Cat. No. 310918)
- C-type lectin, type II glycoprotein, 28/32 kD
Activated T cells, B cells, NK cells, granulocytes, thymocytes, platelets, Langerhans cells
- Lymphocyte, monocyte, and platelet activation, NK cell killing
- Cell Type
- B cells, Granulocytes, Langerhans cells, NK cells, Platelets, T cells, Thymocytes, Tregs
- Biology Area
- Costimulatory Molecules, Immunology
- Molecular Family
- CD Molecules
- Antigen References
1. Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
2. Testi R, et al. 1994. Immunol. Today 15:479.
- Gene ID
- 969 View all products for this Gene ID
- View information about CD69 on UniProt.org
Related Pages & Pathways
- If an antibody clone has been previously successfully used in IBEX in one fluorescent format, will other antibody formats work as well?
It’s likely that other fluorophore conjugates to the same antibody clone will also be compatible with IBEX using the same sample fixation procedure. Ultimately a directly conjugated antibody’s utility in fluorescent imaging and IBEX may be specific to the sample and microscope being used in the experiment. Some antibody clone conjugates may perform better than others due to performance differences in non-specific binding, fluorophore brightness, and other biochemical properties unique to that conjugate.
- Will antibodies my lab is already using for fluorescent or chromogenic IHC work in IBEX?
Fundamentally, IBEX as a technique that works much in the same way as single antibody panels or single marker IF/IHC. If you’re already successfully using an antibody clone on a sample of interest, it is likely that clone will have utility in IBEX. It is expected some optimization and testing of different antibody fluorophore conjugates will be required to find a suitable format; however, legacy microscopy techniques like chromogenic IHC on fixed or frozen tissue is an excellent place to start looking for useful antibodies.
- Are other fluorophores compatible with IBEX?
Over 18 fluorescent formats have been screened for use in IBEX, however, it is likely that other fluorophores are able to be rapidly bleached in IBEX. If a fluorophore format is already suitable for your imaging platform it can be tested for compatibility in IBEX.
- The same antibody works in one tissue type but not another. What is happening?
Differences in tissue properties may impact both the ability of an antibody to bind its target specifically and impact the ability of a specific fluorophore conjugate to overcome the background fluorescent signal in a given tissue. Secondary stains, as well as testing multiple fluorescent conjugates of the same clone, may help to troubleshoot challenging targets or tissues. Using a reference control tissue may also give confidence in the specificity of your staining.
- How can I be sure the staining I’m seeing in my tissue is real?
In general, best practices for validating an antibody in traditional chromogenic or fluorescent IHC are applicable to IBEX. Please reference the Nature Methods review on antibody based multiplexed imaging for resources on validating antibodies for IBEX.
Other FormatsView All CD69 Reagents Request Custom Conjugation
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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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Purified anti-human CD69
FITC anti-human CD69
PE anti-human CD69
PE/Cyanine5 anti-human CD69
APC anti-human CD69
APC/Cyanine7 anti-human CD69
PE/Cyanine7 anti-human CD69
Alexa Fluor® 488 anti-human CD69
Alexa Fluor® 647 anti-human CD69
Pacific Blue™ anti-human CD69
Alexa Fluor® 700 anti-human CD69
Biotin anti-human CD69
PerCP/Cyanine5.5 anti-human CD69
PerCP anti-human CD69
Brilliant Violet 421™ anti-human CD69
Brilliant Violet 785™ anti-human CD69
Brilliant Violet 650™ anti-human CD69
Brilliant Violet 510™ anti-human CD69
Brilliant Violet 605™ anti-human CD69
Purified anti-human CD69 (Maxpar® Ready)
PE/Dazzle™ 594 anti-human CD69
Brilliant Violet 711™ anti-human CD69
APC/Fire™ 750 anti-human CD69
TotalSeq™-A0146 anti-human CD69
TotalSeq™-B0146 anti-human CD69
TotalSeq™-C0146 anti-human CD69
Brilliant Violet 750™ anti-human CD69
KIRAVIA Blue 520™ anti-human CD69
Spark NIR™ 685 anti-human CD69 Antibody
PE/Fire™ 640 anti-human CD69
Spark YG™ 581 anti-human CD69
TotalSeq™-D0146 anti-human CD69
APC anti-human CD69
Spark Blue™ 550 anti-human CD69
PE anti-human CD69