HLA-DR Antibody (MHC II)

SKU: orb2638568

Description

This mAb reacts with the HLA-DR antigen, a member of MHC class II molecules. It does not cross react with HLA-DP and HLA-DQ. HLA-DR is a heterodimeric cell surface glycoprotein comprised of a 36kDa alpha (heavy) chain and a 28kDa beta (light) chain. It is expressed on B-cells, activated T-cells, monocytes/macrophages, dendritic cells and other non-professional APCs. In conjunction with the CD3/TCR complex and CD4 molecules, HLA-DR is critical for efficient peptide presentation to CD4+ T cells. It is an excellent histiocytic marker in paraffin sections producing intense cytoplasmic staining. True histiocytic neoplasms are similarly positive. HLA-DR antigens also occur on a variety of epithelial cells and their corresponding neoplastic counterparts.

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Tested Applications	IHC-P
Dilution Range	The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.
Reactivity	Human
Application Notes	Optimal dilution of the HLA-DR antibody should be determined by the researcher.1. Staining of formalin-fixed tissues requires boiling tissue sections in 10mM Citrate buffer, pH 6.0, for 10-20 min followed by cooling at RT for 20 min2. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min. Read more...

Key Properties

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Antibody Type	Primary Antibody
Host	Mouse
Clonality	Monoclonal
Isotype	Mouse IgG2a, kappa
Clone No.	19-26.1 or MB-26.1
Immunogen	Raji cells were used as the immunogen for the HLA-DR antibody.
Purification	Protein G affinity chromatography
Conjugation	Unconjugated

Storage & Handling

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Storage	Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
Buffer/Preservatives	Prediluted in 1X PBS, 0.1 mg/ml rAlbumin, 0.05% sodium azide; For IHC use only
Expiration Date	12 months from date of receipt.
Disclaimer	For research use only

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IHC: Formalin-fixed, paraffin-embedded human tonsil stained with HLA-DR antibody (19-26.1).

SDS-PAGE Analysis of Purified, BSA-Free HLA-DR Antibody (clone 19-26.1 or MB-26.1). Confirmation of Integrity and Purity of the Antibody.

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UniProt

P01903

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Protocol Information

IHC-P

Immunohistochemistry Paraffin

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