- Clone
- QBEnd/10 (See other available formats)
- Regulatory Status
- RUO
- Other Names
- Hematopoietic progenitor cell antigen CD34, CD34 antigen
- Isotype
- Mouse IgG1, κ
- Barcode Sequence
- ATCACCTAAACCGCC
- Ave. Rating
- Submit a Review
- Product Citations
- publications
CD34, also known as gp105-120, is a type I monomeric sialomucin-like glycophosphoprotein with an approximate molecular weight of 105-120 kD. Selectively expressed on the majority of hematopoietic stem/progenitor cells, bone marrow stromal cells, capillary endothelial cells, embryonic fibroblasts, and some nervous tissue, CD34 is a commonly used marker to identify human hematopoietic stem/progenitor cells. According to the differential sensitivity to enzymatic cleavage, four groups of epitopes of CD34 have been described. CD34 mediates cell adhesion and lymphocytes homing through binding to L-selectin and E-selectin ligands.
Product Details
Product Details
- Verified Reactivity
- Human
- Antibody Type
- Monoclonal
- Host Species
- Mouse
- Immunogen
- This antibody was generated using a vesicular suspension of a perfusate of human term placenta.
- Formulation
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and EDTA
- Preparation
- The antibody was purified by chromatography and conjugated with TotalSeq™-Bn oligomer under optimal conditions.
- Concentration
- 0.5 mg/mL
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C. Do not freeze.
- Application
-
SB - Quality tested
- Recommended Usage
-
Each lot of this antibody is quality control tested by immunofluorescent staining in formalin-fixed, paraffin-embedded (FFPE) lymphoid tissue, and the oligomer sequence is confirmed by sequencing. TotalSeq™-Bn antibodies are compatible with the 10x Visium CytAssist Gene and Protein Expression Assay.
To maximize performance, it is strongly recommended that the reagent be titrated for each application, and that you centrifuge the antibody dilution at 14,000xg at 2 − 8°C for 10 minutes before use. Carefully pipette out the liquid avoiding the bottom of the tube when handling. To determine and optimize dilutions for the addition of Totalseq™-Bn antibodies into pre-designed antibody panels, refer to 10X Genomics Custom Add-on Antibody Optimization guide.
Buyer is solely responsible for determining whether Buyer has all intellectual property rights that are necessary for Buyer's intended uses of the BioLegend TotalSeq™ products. For example, for any technology platform Buyer uses with TotalSeq™, it is Buyer's sole responsibility to determine whether it has all necessary third party intellectual property rights to use that platform and TotalSeq™ with that platform. - Application Notes
-
This antibody is effective in immunohistochemistry (IHC).
The BioLegend QBEnd/10 monoclonal antibody detects the CD34 antigen. It stains the cytoplasm of endothelial cells of vascular tissue with some cross reactivity to basement membrane collagen. In tumors this monoclonal antibody is valuable in labelling the vascular endothelium of Kaposi's sarcoma, tumors involving the liver, spindle shaped tumors and any other highly vascular neoplastic or normal tissue.
**We recommend a quick spin prior to opening the vial.
Positive tissue (human): Skin, tonsil or other highly vascular tissue. - Additional Product Notes
-
TotalSeq™-Bn reagents are designed to profile protein levels following an optimized protocol in spatial transcriptomics. Compatible spatial biology devices (e.g. Imaging System, 10x Genomics Visium Spatial CytAssist Gene and Protein Expression instruments and reagents) and sequencer (e.g. Illumina analyzers) are required. TotalSeq™-B reagents are not compatible with the 10x Genomics Visium system. The complete barcode sequence may be provided upon request. Please contact technical support for more information, or visit TotalSeq™-Bn Reagents for 10x Genomics Visium CytAssist Gene and Protein Assay.
-
Application References
(PubMed link indicates BioLegend citation) -
- Anthony P, et al. Endothelial markers in malignant vascular tumor of the liver: superiority of QBEnd/10 over von willebrand factor and uelex europus agglutinin 1. J Clin Path 44:2, 1991.
- Sankey EA, et al. QBEnd/10: a new immunostain for the diagnosis of Kaposi's Sarcoma. J Path 161:267-271, 1990.
- Fletcher CDM, et al. QBEnd/10: a useful but by no means a specific marker for the diagnosis of kaposi's sarcoma. J Path 162:274, 1990.
- Ramani P, et al. QBEnd/10, a new monoclonal antibody to endothelium: assessment of its diagnostic utility in paraffin sections. Histopathol 17:237-242, 1990.
- RRID
-
AB_3097368 (BioLegend Cat. No. 826405)
Antigen Details
- Structure
- 105-120 kD single chain mucin-like glycoprotein
- Distribution
-
Hematopoietic stem/progenitor cells, bone marrow stromal cells, endothelial cells, embryonic fibroblasts
- Function
- Cell adhesion
- Ligand/Receptor
- L-selectin, E-selectin
- Cell Type
- Endothelial cells, Fibroblasts, Hematopoietic stem and progenitors
- Biology Area
- Cell Biology, Neuroinflammation, Neuroscience
- Antigen References
-
1. Krause DS, et al. 1996. Blood 87:1.
2. Puri KD, et al. 1995. J. Cell Biol. 131:261.
3. Zola H, et al. 2007. Leukocyte and Stromal Cell Molecules:The CD Markers. John Wiley & Sons Inc, Hoboken New Jersey. - Gene ID
- 947 View all products for this Gene ID
- UniProt
- View information about CD34 on UniProt.org
Related FAQs
- 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 Formats
View All CD34 Reagents Request Custom ConjugationDescription | Clone | Applications |
---|---|---|
Purified anti-CD34 | QBEnd/10 | IHC,SB |
TotalSeq™-Bn1334 anti-CD34 | QBEnd/10 | SB |
Compare 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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