CD34 Recombinant Mouse Monoclonal Antibody [PDM0-12]

About this product

CD34 (also named myeloid progenitor cell antigen) is a heavily glycosylated type I transmembrane protein. CD34 is detected in myeloid blasts in myelodysplastic syndrome and acute myeloid leukaemia in most cases as well as lymphoblasts in most cases of B-acute lymphoblastic leukaemia. Mature B- and T-cell lymphomas and leukaemias are CD34 negative. The majority of vascular tumours, including haemangiosarcoma and Kaposi sarcoma are CD34 positive, the protein frequently being expressed in abluminal processes. However, only about 30% of the lymphangiomas are CD34 positive. CD34 positivity is seen in most cases of dermatofibrosarcoma protuberans, solitary fibrous tumor, lipoma (particularly spindle cell lipoma) and liposarcoma, gastrointestinal stromal tumor (strong positivity in about 80% of the cases, which are also CD117 positive), and a varying proportion of meningioma. Moderate expression is seen in cutaneous leiomyoma, while weak expression is present in uterine and soft tissue smooth muscle tumours. Some cases of myofibroblastoma have revealed CD34 positivity. Schwannoma is CD34 positive mainly in Antoni B areas. Neurofibroma and neurofibrosarcoma may also stain. About 50% of epitheloid sarcomas show strong focal or generalized staining for this antigen. Some synovial sarcomas may show focal staining. Fibrous histiocytoma is CD34 negative. CD34 is expressed only exceptionally in carcinomas (kidney, thyroid gland) and clear cell sarcoma/melanoma. In a panel, CD34 staining is useful for the classification of myeloid and lymphoid neoplasms as well as spindle cell neoplasms (particularly identification of gastrointestinal stromal tumour and haemangiosarcoma). Liver and appendix is recommended as positive and negative tissue controls for CD34. In liver the protocol must be calibrated to provide a moderate to strong predominately membranous staining reaction of endothelial cells in the portal vessels, but also of the periportal sinusoidal endothelial cells serving as “low expressors” for an optimal calibrated assay for CD34. No staining reaction must be seen in liver cells.

Specifications

Catalog number

HA601109

Size / count

100 µL

Dry ice

No

Hazardous

No

Discontinued

No

CAS Number

9000-83-3

Product Name Alternative

CD34 antibody CD34 antigen antibody CD34 molecule antibody CD34_HUMAN antibody Cluster designation 34 antibody cluster of differentiation 34 antibody Hematopoietic progenitor cell antigen CD34 antibody HPCA1 antibody Mucosialin antibody OTTHUMP00000034733 antibody OTTHUMP00000034734 antibody

Abbreviation

Hematopoietic progenitor cell antigen CD34 CD34

Swiss Prot

P28906 Human

Cellular Locus

Membrane.

Host

Mouse

Species Reactivity

Human

Immunogen

Synthetic peptide.

Isotype

IgG1

Conjugation

Non-conjugated

Type

Recombinant Mouse monoclonal Antibody

Applications

IHC-P

Positive Control

Human liver tissue, human liver carcinoma tissue, human kidney tissue, human placenta tissue.

Concentration

1 mg/mL

Dilution

IHC-P: 1:1,000

Purity

Protein A affinity purified.

Form

Liquid

Buffer

PBS (pH7.4), 0.1% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.

Molecular Weight

Predicted band size: 41 kDa

Storage Conditions

Store at +4°C after thawing. Aliquot store at -20°C. Avoid repeated freeze/thaw cycles.

Recombinant Antibody

Yes