PerCP/Cyanine5.5 anti-human CD19 Recombinant Antibody

Pricing & Availability
QA18A75 (See other available formats)
Regulatory Status
Other Names
Mouse IgG1, κ
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Product Citations
Human peripheral blood lymphocytes were stained with anti-human CD20 APC and anti-human CD19 recombinant (clone QA18A75) PerCP/Cyanine5.5 (left) or mouse IgG1, κ PerCP/Cyanine5.5 isotype control (right).
  • QA18A75_PerCPCyanine55_RECOM_Antibody_081822
    Human peripheral blood lymphocytes were stained with anti-human CD20 APC and anti-human CD19 recombinant (clone QA18A75) PerCP/Cyanine5.5 (left) or mouse IgG1, κ PerCP/Cyanine5.5 isotype control (right).
Compare all formats See PerCP/Cyanine5.5 spectral data
Cat # Size Price Save
309503 25 tests ¥35,700
309504 100 tests ¥73,500
CD19, also known as B4, is a 95 kD type I transmembrane glycoprotein. It is a member of the immunoglobulin superfamily expressed on B-cells (from pro-B to blastoid B cells, absent on plasma cells) and follicular dendritic cells. CD19 is involved in B cell development, activation, and differentiation. CD19 forms a complex with CD21 (CR2) and CD81 (TAPA-1), and functions as a BCR co-receptor.
Product Details
Technical data sheet

Product Details

Verified Reactivity
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 PerCP/Cyanine5.5 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

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. It is recommended that the reagent be titrated for optimal performance for each application.

* PerCP/Cyanine5.5 has a maximum absorption of 482 nm and a maximum emission of 690 nm. 

Excitation Laser
Blue Laser (488 nm)
Application Notes

From in-house testing, clone QA18A75 blocks binding of clone HIB19 on target cells.

AB_2924527 (BioLegend Cat. No. 309503)
AB_2924527 (BioLegend Cat. No. 309504)

Antigen Details

Ig superfamily, type I transmembrane glycoprotein, 95 kD

B lineage (except plasma cells), follicular dendritic cells

B cell activation and differentiation
CD21 (CR2), CD81 (TAPA-1), BCR
Cell Type
B cells, Leukemia, Lymphocytes
Biology Area
Adaptive Immunity, Immuno-Oncology, Signal Transduction
Molecular Family
CD Molecules
Antigen References
  1. Tedder TF, et al. 1994. Immunol. Today 15:437-42.
  2. Bradbury LE, et al. 1993. J Immunol. 151:2915-27.
Gene ID
930 View all products for this Gene ID
View information about CD19 on

Related FAQs

How stable is PerCP/Cyanine5.5 tandem as compared to PerCP alone?

PerCP/Cyanine5.5 is quite photostable and also better than PerCP alone in withstanding fixation.

Go To Top Version: 1    Revision Date: 08/18/2022

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*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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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.

  • Purified anti-human CD19 Recombinant Antibody

  • PerCP/Cyanine5.5 anti-human CD19 Recombinant Antibody

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  • PE/Cyanine7 anti-human CD19 Recombinant Antibody

  • FITC anti-human CD19 Recombinant Antibody

  • APC anti-human CD19 Recombinant Antibody


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