CD34 Antibody (ICO-115)


Flow Cytometry: CD34 Antibody (ICO-115) [NBP2-29455] - Analysis using the PE conjugate of NBP2-29455. Surface Staining of CD34 on KG-1 cells using CD34 antibody (red) and isotype control (green) at 5 ul/0.5 ug/10^6 more
Flow Cytometry: CD34 Antibody (ICO-115) [NBP2-29455] - Surface flow cytometric analysis of CD34 on KG-1 cells using CD34 antibody (red) and isotype control (green) at 0.5 ug/10^6 cells.

Product Details

Reactivity Hu, RtSpecies Glossary
Applications ELISA, Flow, ICC/IF
0.2 mg/ml

Order Details

CD34 Antibody (ICO-115) Summary

200ug/ml of antibody purified from Bioreactor Concentrate by Protein A or G. Prepared in 10 mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0 mg/ml. (NBP2-33076)

Antibody with azide - store at 2 to 8C. Antibody without azide - store at -20 to -80C. Antibody is stable for 24 months. Non-hazardous.
Additional Information
Clone ICO-115 was used by HLDA to establish CD designation.
Blast cells of a chronic myeloid leukemia patient
Cell surface
Hematopoietic Stem Cell & Endothelial Marker
This antibody recognizes a carbohydrate epitope on a single chain, transmembrane, heavily glycosylated protein of 90-120kDa, which is identified as CD34 (VI international workshop on human differentiation antigens). Its expression is a hallmark for identifying pluripotent hematopoietic stem or progenitor cells. Its expression is gradually lost as lineage committed progenitors differentiate. CD34 is a marker of choice for staining blasts in acute myeloid leukemia. In addition, it is expressed by soft tissue tumors, such as solitary fibrous tumor and gastrointestinal stromal tumor. CD34 expression is also found in vascular endothelium. Additionally, proliferating endothelial cells overexpress this molecule than the non-proliferating endothelial cells. Anti-CD34 labels 85% of angiosarcoma and Kaposis sarcoma, but shows low specificity.
IgG1 Kappa
Protein A or G purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.


  • Flow Cytometry 1-2 ug/million cells
  • Immunocytochemistry/ Immunofluorescence 1-2 ug/ml
Application Notes
ELISA: For coating, order antibody without BSA).
Optimal dilution for a specific application should be determined.
Reviewed Applications
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NBP2-29455 in the following applications:

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NBP2-29455 in the following applications:

Packaging, Storage & Formulations

Store at 4C.
10 mM PBS with 0.05% BSA
0.05% Sodium Azide
0.2 mg/ml
Protein A or G purified

Alternate Names for CD34 Antibody (ICO-115)

  • CD34 antigenhematopoietic progenitor cell antigen CD34
  • CD34 molecule
  • CD34
  • HPCA1


CD34, also known as Cluster of Differentiation 34, is a transmembrane phosphoglycoprotein that is primarily known for being a surface marker for hematopoietic stem cells (HSCs) and progenitor cells (1,2). The CD34 protein consists of a heavily glycosylated extracellular domain, a single-pass transmembrane helix, and a cytoplasmic tail with PDZ binding motifs (1,3). Human CD34 has two protein isoforms consisting of 385 amino acids (aa) for the canonical isoform and 328 aa for isoform 2 (3,4). The canonical CD34 isoform has calculated theoretical molecular weight of 40 kDa and an observed molecular weight of ~115 kDa (1,3,4). L-Selectin (CD62L) is the most common ligand for CD34, but it has also been shown to bind CrkL (1,3).

CD34 has commonly been used as a marker for the diagnosis and classification of various diseases and pathologies including leukemia and solitary fibrous tumor (SFT) (2,5). In terms of immunohistochemistry and histopathology, CD34 has been the most common marker for SFT and is expressed in ~79% of cases (5). In addition to its use as a cell marker, CD34-postive (CD34+) hematopoietic stem cells have been used therapeutically in patients following radiation or chemotherapy due to their regenerative potential (6). There are several clinical trials showing promising results for CD34+ cell therapy for cardiovascular diseases including heart failure, ischemia, dilated cardiomyopathy, acute myocardial infarction, and angina (6). Besides hematopoietic lineages, CD34 is also expressed in non-hematopoietic cells including mesenchymal stem cells, endothelial cells and progenitors, fibrocytes, muscle satellite cells, and some cancer stem cells (1,3). While the clinical and cell therapy applications of CD34 as a cell marker is well documented, the function of CD34 is less understood but has been implicated in many cellular processes such as adhesion, proliferation, signal transduction, differentiation, and progenitor phenotype maintenance (1,3).


1. Sidney, L. E., Branch, M. J., Dunphy, S. E., Dua, H. S., & Hopkinson, A. (2014). Concise review: evidence for CD34 as a common marker for diverse progenitors. Stem cells (Dayton, Ohio), 32(6), 1380-1389.

2. Krause, D. S., Fackler, M. J., Civin, C. I., & May, W. S. (1996). CD34: structure, biology, and clinical utility. Blood, 87(1), 1-13

3. Kapoor, S., Shenoy, S. P., & Bose, B. (2020). CD34 cells in somatic, regenerative and cancer stem cells: Developmental biology, cell therapy, and omics big data perspective. Journal of cellular biochemistry, 121(5-6), 3058-3069.

4. Uniprot (P28906)

5. Davanzo, B., Emerson, R. E., Lisy, M., Koniaris, L. G., & Kays, J. K. (2018). Solitary fibrous tumor. Translational gastroenterology and hepatology, 3, 94.

6. Prasad, M., Corban, M. T., Henry, T. D., Dietz, A. B., Lerman, L. O., & Lerman, A. (2020). Promise of autologous CD34+ stem/progenitor cell therapy for treatment of cardiovascular disease. Cardiovascular research, 116(8), 1424-1433.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for CD34 Antibody (NBP2-29455)(8)

We have publications tested in 2 confirmed species: Human, Rat.

We have publications tested in 2 applications: FLOW, ICC/IF.

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Showing Publications 1 - 8 of 8.
Publications using NBP2-29455 Applications Species
Zhang J, Li C, Meng F et al. Functional tissue-engineered microtissue formed by self-aggregation of cells for peripheral nerve regeneration Stem cell research & therapy 2022-01-10 [PMID: 35012663] (FLOW, Rat) FLOW Rat
Vallant N, Sandhu B, Hamaoui K, et al Immunomodulatory Properties of Mesenchymal Stromal Cells Can Vary in Genetically Modified Rats Int J Mol Sci 2021-01-28 [PMID: 33504032]

Citation using the Azide and BSA Free version of this antibody.
Zhao Y, Li W, Song J et al. High Expression of EphA2 Led to Secondary Injury by Destruction of BBB Integrity though the ROCK Pathway after Diffuse Axonal Injury Neurosci. Lett. 2020-07-25 [PMID: 32721428] (ICC/IF, Rat) ICC/IF Rat
Qi L, Ahmadi AR, Huang J et al. Major Improvement in Wound Healing Through Pharmacologic Mobilization of Stem Cells in Severely Diabetic Rats Diabetes. [PMID: 31974141]
Li W, Chen F, Chen M et al. Psoralen mediates BMSCs osteogenic differentiation via cross-talk between Wnt/?-catenin and BMP/smad signaling pathways Research Square 2023-05-17 [PMID: 31896066] (ICC/IF, Rat) ICC/IF Rat
Zhao Y, Wei X, Song J et al. Peroxisome Proliferator-Activated Receptor g Agonist Rosiglitazone Protects Blood-Brain Barrier Integrity Following Diffuse Axonal Injury by Decreasing the Levels of Inflammatory Mediators Through a Caveolin-1-Dependent Pathway. Inflammation. 2018-11-28 [PMID: 30488141] (ICC/IF, Human) ICC/IF Human
Braun RK, Chetty C, Balasubramaniam V et al. Intraperitoneal injection of MSC-derived exosomes prevent experimental bronchopulmonary dysplasia Biochem. Biophys Res Commun 2018-08-06 [PMID: 30093115] (Rat)

This citation used the Alexa Fluor 488 version of this antibody.
Wang MY, Nestvold J, Rekdal O et al. A novel rat fibrosarcoma cell line from transformed bone marrow-derived mesenchymal stem cells with maintained in vitro and in vivo stemness properties. Exp. Cell Res. 2017-02-09 [PMID: 28189639] (Rat) Rat

Review for CD34 Antibody (NBP2-29455) (1) 51

Average Rating: 5
(Based on 1 review)
We have 1 review tested in 1 species: Rat.

Reviews using NBP2-29455:
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Images Ratings Applications Species Date Details
Immunohistochemistry-Frozen CD34 NBP2-29455
reviewed by:
Verified Customer
IHC-Fr Rat 09/20/2017


Sample TestedBrain tissue


CommentsTissue Processing:The brain tissue was embedded in OCT and put in a glass beaker containing isopentane. The beaker was quickly placed in liquid nitrogen and the tissue was frozen. Removed tissue into -80 ° C for storage; Remove out the tissue from -80 ° C and equilibrate in the freezing microtome for one hour.

Product General Protocols

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Video Protocols

ICC/IF Video Protocol

FAQs for CD34 Antibody (NBP2-29455). (Showing 1 - 1 of 1 FAQs).

  1. I wonder if you have a CD105 or CD34 antibody suitable for IHC that is specific for human and do not bind mouse?
    • We do not have any anti-human CD34 or CD105 antibodies that are confirmed to NOT detect the mouse protein. When we have tested an antibody and confirmed that it will not react with mouse samples, we will add Mu(-) to the datasheet, and unfortunately all of our CD105 and CD34 antibodies will either detect the mouse protein, or they have not been used in mouse samples before.

Secondary Antibodies


Isotype Controls

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The application of CD31/Pecam-1 (MEC 7.46) in breast cancer research
CD31/PECAM-1, or platelet endothelial cell adhesion molecule 1, is a 130-kDa glycoprotein expressed on vascular and hematopoietic cells.  Depending on the cell type, CD31/PECAM-1 expression can be largely localized to cell junctions, playing a rol...  Read full blog post.

CD68 (Cluster of differentiation 68, GP110, LAMP4, SCARD1)
CD68 belongs to a growing family of hematopoietic mucin-like molecules known as lysosomal/endosomal-associated membrane glycoproteins (LAMPs). Other LAMP family members included leukosialin, stem cell antigen CD34, and GlyCAM-1. CD68 encodes a 110-kD ...  Read full blog post.

CD34 (Cluster of differentiation 34, hematopoietic progenitor cell antigen)
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CD34 Serves as an Important Marker in Disease Research
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CD34 Serves as an Important Marker in Disease Research
CD34 is a cell surface glycoprotein that aids cells in cell-cell adhesion. It is expressed on endothelial cells where it is known to bind L-selectin and may aid in migration of T-cells. Moreover, it is expressed on hematopoietic stem cells (HSC), musc...  Read full blog post.

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Verified Customer
Application: IHC-Fr
Species: Rat


Gene Symbol CD34