CD34 Antibody

This antibody recognizes a single chain, transmembrane, heavily glycosylated protein of 90-120kDa, which is identified as CD34. On the basis of differential sensitivity to degradation by specific enzymes, epitopes of monoclonal antibodies to CD34 are classified into three main categories, class I, class II and class III. This is a class II antibody whose epitope is resistant to neuraminidase but sensitive to glycoprotease and chymopapain. CD34 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. Its expression is also found in vascular endothelium. Additionally, it appears that proliferating endothelial cells express this molecule more than the non-proliferating endothelial cells. CD34 antibody labels > 85% of angiosarcoma and Kaposi's sarcoma, but with a lower specificity.

Product Specifications

CAS Number

9007-83-4

Specifications

Immunofluorescence: 1-2 µg/mL, Immunohistochemistry (FFPE) : 1-2 µg/mL for 30 min at RT

UniProt

P28906

Host

Mouse

Reactivity

Human

Immunogen

A detergent solubilized vesicular suspension prepared from human term placenta was used as the immunogen for this CD34 antibody.

Clonality

Monoclonal

Isotype

IgG1 k

Clone

SPM123

Applications

FACS, IHC-P

Purity

Protein G affinity

Format

Purified

Buffer

0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide

Reconstitution

Store the CD34 antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).

Limitations

This CD34 antibody is available for research use only.

Storage Conditions

Store the CD34 antibody at 2-8°C (with azide) or aliquot and store at -20°C or colder (without azide) .

Formulation

0.2 mg/mL in 1X PBS with 0.1 mg/mL BSA (US sourced) and 0.05% sodium azide

Location

Cell surface

Image Legend

IHC staining of FFPE human tonsil tissue with CD34 antibody (clone SPM123) . HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 10-20 min followed by cooling at RT for 20 min.