Spark Violet™ 423 anti-mouse CD19 Recombinant Antibody

Pricing & Availability
QA17A27 (See other available formats)
Regulatory Status
Other Names
Mouse IgG1, κ
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Product Citations
C57BL/6 splenocytes were stained with anti-mouse CD3ɛ APC and anti-mouse CD19 recombinant (clone QA17A27) Spark Violet ™423 (left) or CD3ɛ APC only (right).
  • QA17A27_SparkViolet423_CD19_Antibody_1_022422
    C57BL/6 splenocytes were stained with anti-mouse CD3ɛ APC and anti-mouse CD19 recombinant (clone QA17A27) Spark Violet ™423 (left) or CD3ɛ APC only (right).
Compare all formats See Spark Violet™ 423 spectral data
Cat # Size Price Save
159811 25 µg ¥32,340
159812 100 µg ¥68,250

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

Product Details

Verified Reactivity
Antibody Type
Host Species
Mouse CD19-expressing K562 human erythroleukemia cells
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide
The antibody was purified by affinity chromatography and conjugated with Spark Violet™ 423 under optimal conditions.
0.5 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.

FC - Quality tested

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 ≤ 0.25 µg per million cells in 100 µL volume. It is recommended that the reagent be titrated for optimal performance for each application.

* Spark Violet™ 423 has a maximum excitation of 400 nm and a maximum emission of 415 nm.

Excitation Laser
Violet Laser (405 nm)
Application Notes

Clone QA17A27 of antibody can block binding of 6D5 clone on target and vice versa.

AB_2922493 (BioLegend Cat. No. 159811)
AB_2922493 (BioLegend Cat. No. 159812)

Antigen Details

Ig superfamily, associates with CD21 and CD81, 95 kD

Pro-B cells to mature B cells (during development), follicular dendritic cells

Modulates B cell activation and differentiation
B cells, Dendritic cells
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. 5:341-8.
  2. Krop I, et al. 1996. Eur J Immunol. 26:23-42.
  3. Krop I, et al. 1996. J Immunol. 157:48-56.
  4. Tedder TF, et al. 1994. Immunol. Today 15:437-42.
Gene ID
12478 View all products for this Gene ID
View information about CD19 on

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Go To Top Version: 1    Revision Date: 02/24/2022

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.


*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

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.

  • PE anti-mouse CD19 Recombinant Antibody

  • APC anti-mouse CD19 Recombinant Antibody

  • FITC anti-mouse CD19 Recombinant Antibody

  • Purified anti-mouse CD19 Recombinant Antibody

  • PE/Cyanine7 anti-mouse CD19 Recombinant Antibody

  • Spark Violet™ 423 anti-mouse CD19 Recombinant Antibody


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