Spark Red™ 718 anti-mouse CD19 (Flexi-Fluor™) Antibody, CD19, 6D5

Pricing & Availability

Clone: 6D5 (See other available formats)
Regulatory Status: RUO
Other Names: B4
Isotype: Rat IgG2a, κ
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285053

50 µg

231€

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Description

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 Details

Technical Data Sheet (pdf)

Product 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.
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

Documentation

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Related Protocols

Cell Surface Flow Cytometry Staining Protocol

Related Products

Description	Clone	Applications

Related Pages & Pathways

Pathways

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 Conjugation

Description	Clone	Applications
APC anti-mouse CD19	6D5	FC
Biotin anti-mouse CD19	6D5	FC
FITC anti-mouse CD19	6D5	FC
PE anti-mouse CD19	6D5	FC
PE/Cyanine5 anti-mouse CD19	6D5	FC
Purified anti-mouse CD19	6D5	FC,CyTOF®,IHC-F
PE/Cyanine7 anti-mouse CD19	6D5	FC
Alexa Fluor® 488 anti-mouse CD19	6D5	FC
Alexa Fluor® 647 anti-mouse CD19	6D5	FC,IHC-F
Pacific Blue™ anti-mouse CD19	6D5	FC
Alexa Fluor® 700 anti-mouse CD19	6D5	FC
APC/Cyanine7 anti-mouse CD19	6D5	FC
PerCP anti-mouse CD19	6D5	FC
PerCP/Cyanine5.5 anti-mouse CD19	6D5	FC
Alexa Fluor® 594 anti-mouse CD19	6D5	IHC-F,FC
Brilliant Violet 421™ anti-mouse CD19	6D5	FC,IHC-F
Brilliant Violet 570™ anti-mouse CD19	6D5	FC
Brilliant Violet 605™ anti-mouse CD19	6D5	FC
Brilliant Violet 650™ anti-mouse CD19	6D5	FC
Brilliant Violet 785™ anti-mouse CD19	6D5	FC
Brilliant Violet 510™ anti-mouse CD19	6D5	FC
Purified anti-mouse CD19 (Maxpar® Ready)	6D5	FC,CyTOF®
PE/Dazzle™ 594 anti-mouse CD19	6D5	FC
Brilliant Violet 711™ anti-mouse CD19	6D5	FC
APC/Fire™ 750 anti-mouse CD19	6D5	FC
TotalSeq™-A0093 anti-mouse CD19	6D5	PG
Brilliant Violet 750™ anti-mouse CD19	6D5	FC
TotalSeq™-B0093 anti-mouse CD19	6D5	PG
Spark Blue™ 550 anti-mouse CD19	6D5	FC
Spark NIR™ 685 anti-mouse CD19	6D5	FC
TotalSeq™-C0093 anti-mouse CD19	6D5	PG
Ultra-LEAF™ Purified anti-mouse CD19	6D5	FC,CyTOF®,IHC-F
PE/Fire™ 640 anti-mouse CD19 Antibody	6D5	FC
Spark YG™ 581 anti-mouse CD19	6D5	FC
APC/Fire™ 810 anti-mouse CD19	6D5	FC
Spark YG™ 570 anti-mouse CD19	6D5	IHC-F
Spark Blue™ 574 anti-mouse CD19 Antibody	6D5	FC
Spark Blue™ 515 anti-mouse CD19	6D5	FC
Spark UV™ 387 anti-mouse CD19	6D5	FC
Spark Red™ 718 anti-mouse CD19 (Flexi-Fluor™)	6D5	FC

Certificate of Analysis

Go To Top Version: 1 Revision Date: 02/07/2024

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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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.