- Clone
- 6D5 (See other available formats)
- Regulatory Status
- RUO
- Other Names
- B4
- Isotype
- Rat IgG2a, κ
- Ave. Rating
- Submit a Review
- Product Citations
- publications
CD19 is a 95 kD glycoprotein also known as B4. It is a member of the Ig superfamily, expressed on all pro-B to mature B cells (during development) and follicular dendritic cells. Plasma cells do not express CD19. CD19, in association with CD21 and CD81, forms a molecular complex integral to B cell activation.
Product DetailsProduct Details
- Verified Reactivity
- Mouse
- Antibody Type
- Monoclonal
- Host Species
- Rat
- Immunogen
- Mouse CD19-expressing K562 human erythroleukemia cells
- Formulation
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide
- Preparation
- The antibody was purified by affinity chromatography and conjugated with Spark Red™ 718 under optimal conditions.
- Concentration
- 0.2 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.
- Application
-
FC
- Recommended Usage
-
Flexi-Fluors™ are provided at a standard 0.2 mg/mL concentration. We recommend titrating this reagent to determine the optimal concentration for each application. For many flow cytometry applications, conjugated antibodies perform well at concentrations ranging from 0.03 to 1.0 µg per million cells in 100 µL. We recommend testing a range of concentrations starting from 10 µg/mL.
For example, make five 1:1 serial dilutions of the 0.2 mg/mL antibody. Add 5 µL of each dilution (including the undiluted antibody) to 100 µL of cells (at 107 cells/mL) to test six concentrations -- 1.0, 0.5, 0.25, 0.125, 0.06, and 0.03 µg per million cells in 100 µL volume. Compare staining patterns or create a titration curve using the MFI or staining index to determine the optimal concentration. - Excitation Laser
-
Red Laser (633 nm)
- Application Notes
-
Additional reported applications (for the relevant formats) include: immunofluorescence7.
- Additional Product Notes
-
For more information about Flexi-Fluors™, visit our Flexi-Fluor™ page and review FAQs associated with this product line.
- Application References
-
- Shoham T, et al. 2003. J. Immunol. 171:4062. (FC)
- Goodyear CS, et al. 2004. J. Immunol. 172:2870. (FC)
- Kamimura D, et al. 2006. J. Immunol. 177:306. (FC)
- Andoniou CE, et al. 2005. Nat. Immunol. 6:1011. (FC)
- Lawson BR, et al. 2007. J. Immunol. 178:5366. (FC)
- Phan TG, et al. 2007. Nat. Immunol. 8:992. (FC)
- Hayashida K, et al. 2008. J. Biol. Chem. 283:19895. (IF) PubMed
- Charles N, et al. 2010. Nat. Med. 16:701. (FC) PubMed
- Bankoti J, et al. 2010. Toxicol. Sci. 115:422. (FC) PubMed
- Stadnisky MD, et al. 2011. Blood. 117:5133. (FC) PubMed
- Perlot T, et al. 2012. J. Immunol. 188:1201. (FC) PubMed
- Olive V, et al. 2013. Elife. 2:822. PubMed
- Miyai T, et al. 2014. PNAS. 111:11780. PubMed
- RRID
-
AB_3106315 (BioLegend Cat. No. 285053)
Antigen Details
- Structure
- Ig superfamily, associates with CD21 and CD81, 95 kD
- Distribution
-
Pro-B cells to mature B cells (during development), follicular dendritic cells
- Function
- Modulates B cell activation and differentiation
- Ligand/Receptor
- CD21, CD81, Leu-13
- Cell Type
- B cells, Dendritic cells
- Biology Area
- Costimulatory Molecules, Immunology
- Molecular Family
- CD Molecules
- Antigen References
-
1. Fearon DT. 1993. Curr. Opin. Immunol. 5:341.
2. Krop I, et al. 1996. Eur. J. Immunol. 26:238.
3. Krop I, et al. 1996. J. Immunol. 157:48.
4. Tedder TF, et al. 1994. Immunol. Today 15:437. - Gene ID
- 12478 View all products for this Gene ID
- UniProt
- View information about CD19 on UniProt.org
Related FAQs
- What are Flexi-Fluors?
-
Flexi-Fluors are rapidly made-to-order conjugated antibodies. The technology, manufacturing processes, and specifications used to create Flexi-Fluors are the same as our regular catalog products. However, the optimal concentration and performance of each Flexi-Fluor must be determined by the customer.
- How quickly will I receive my order?
-
We aim to ship Flexi-Fluors within 2-3 weeks of receipt of your order. However, depending on your location, shipping times may vary.
- How are Flexi-Fluors different from regular catalog products?
-
Flexi-Fluors are made on demand, specifically for you. Flexi-Fluors are manufactured using the same high-quality standards, and specifications as other catalog products. For faster delivery, Flexi-Fluors are not tested by flow cytometry to determine optimal concentrations or evaluate performance. This testing needs to be performed by the customer.
- How do I determine the optimal concentration for using my Flexi-Fluor? How should I titrate my antibody?
-
Flexi-Fluors are provided at a standard 0.2 mg/mL concentration. We recommend that you titrate your antibody to determine the optimal concentration to use for your application. For many flow cytometry applications, conjugated antibodies perform well at concentrations ranging from 0.03 to 1.0 µg per million cells in 100 µL volume. We recommend that you test a range of concentrations starting from 10 µg/mL.
For example, make five 1:1 serial dilutions of your 0.2 mg/mL antibody. Add 5 µL of each dilution (including the undiluted antibody) to 100 µL of cells (at 107 cells/ml) to test six concentrations - 1.0, 0.5, 0.25, 0.125, 0.06, and 0.03 µg per million cells in 100 µL volume. Compare staining patterns or create a titration curve using the MFI or staining index to determine the optimal concentration.
- I can’t find the antibody-dye combination that I need. When will it be available?
-
We continuously update our catalog, introducing scores of new products every month. Please get in touch with our Technical Service team for an update on new products or recommendations for suitable alternatives to complete your panel. Or contact Custom Solutions to inquire about our affordable custom conjugation services.
- I need help to validate the performance of my Flexi-Fluor. Who should I contact?
-
Please get in touch with Technical Service for assistance.
- Can I order more than 50 μg of a Flexi-Fluor?
-
Yes, you can order multiple vials of the same Flexi-Fluor products. We cannot guarantee, however, that these vials will be bottled from the same lot. For bulk single-lot orders, contact our Custom Solutions team.
- What is the expiration date of my Flexi-Fluor?
-
Expiration dates can be found on the vial label or by using our CoA lookup tool.
Other Formats
View All CD19 Reagents Request Custom ConjugationCompare Data Across All Formats
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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APC anti-mouse CD19
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Biotin anti-mouse CD19
-
FITC anti-mouse CD19
-
PE anti-mouse CD19
-
PE/Cyanine5 anti-mouse CD19
-
Purified anti-mouse CD19
-
PE/Cyanine7 anti-mouse CD19
-
Alexa Fluor® 488 anti-mouse CD19
-
Alexa Fluor® 647 anti-mouse CD19
-
Pacific Blue™ anti-mouse CD19
-
Alexa Fluor® 700 anti-mouse CD19
-
APC/Cyanine7 anti-mouse CD19
-
PerCP anti-mouse CD19
-
PerCP/Cyanine5.5 anti-mouse CD19
-
Alexa Fluor® 594 anti-mouse CD19
-
Brilliant Violet 421™ anti-mouse CD19
-
Brilliant Violet 570™ anti-mouse CD19
-
Brilliant Violet 605™ anti-mouse CD19
-
Brilliant Violet 650™ anti-mouse CD19
-
Brilliant Violet 785™ anti-mouse CD19
-
Brilliant Violet 510™ anti-mouse CD19
-
Purified anti-mouse CD19 (Maxpar® Ready)
-
PE/Dazzle™ 594 anti-mouse CD19
-
Brilliant Violet 711™ anti-mouse CD19
-
APC/Fire™ 750 anti-mouse CD19
-
TotalSeq™-A0093 anti-mouse CD19
-
Brilliant Violet 750™ anti-mouse CD19
-
TotalSeq™-B0093 anti-mouse CD19
-
Spark Blue™ 550 anti-mouse CD19
-
Spark NIR™ 685 anti-mouse CD19
-
TotalSeq™-C0093 anti-mouse CD19
-
Ultra-LEAF™ Purified anti-mouse CD19
-
PE/Fire™ 640 anti-mouse CD19 Antibody
-
Spark YG™ 581 anti-mouse CD19
-
APC/Fire™ 810 anti-mouse CD19
-
Spark YG™ 570 anti-mouse CD19
-
Spark Blue™ 574 anti-mouse CD19 Antibody
-
Spark Blue™ 515 anti-mouse CD19
-
Spark UV™ 387 anti-mouse CD19
-
Spark Red™ 718 anti-mouse CD19 (Flexi-Fluor™)
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