Monoclonal anti HLA DRB (HLA DRB/1067)

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Catalog #: BNUB1067
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Product Description

This MAb reacts with the beta-chain of HLA-DRB1 antigen, a member of MHC class II molecules. It does not cross react with HLA-DP and HLA-DQ. Its epitope is different from that of MAb L243. 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. Loss of HLA-DR expression is related to tumor microenvironment and predicts adverse outcome in diffuse large B-cell lymphoma.

Marder RJ, et al. 1985. Lab. Invest. 52:497.2. Norton AJ and Isaacson PG. 1987. Am. J. Pathol. 128:225.3. Hua ZX, et al. 1998. Hum. Pathol. 29(12):1441

Additional Information


Purified with BSA, 0.2 mg/mL, Purified, BSA-free, 1 mg/mL, CF405S, CF405M, CF488A, CF543, CF555, CF568, CF594, CF640R, CF647, CF660R, CF680, CF680R, CF770, Biotin, R-PE, APC, Per-CP, Alkaline Phosphatase, HRP


50 uL, 100 uL, 250 uL, 500 uL

Supplied As

Purified: 0.2 mg/mL in PBS/0.05% BSA/0.05% azide, Purified, BSA-free: 1 mg/mL in PBS without azide, Conjugates: 0.1 mg/mL in PBS/0.1% BSA/0.05% azide, HRP conjugates: 0.1 mg/mL in PBS/0.05% BSA

Antibody type


Host species


Reactivity (target)





IgG3, kappa



Molecular weight

28 kDa (beta chain)

Entrez gene ID







Activated human peripheral blood mononuclear cells

Species reactivity

Human, Monkey


Flow cytometry, Immunofluorescence, Immunohistology (formalin), Western

Cellular localization

Cell surface

Application notes

Flow Cytometry (0.5-1 ug/million cells/0.1 mL), Immunofluorescence 0.5-1 ug/mL, Immunohistology formalin-fixed 0.25-0.5 ug/mL for 30 minutes at RT, Optimal dilution for a specific application should be determined by user, Staining of formalin-fixed tissues is enhanced by boiling tissue sections in 10 mM citrate buffer, pH 6.0, for 10-20 min followed by cooling at RT for 20 minutes, Western blotting 0.5-1 ug/mL

Positive control

Ramos, Daudi or HuT78 cells. Tonsil or lymph node

MSDS (PDF):MSDS Primary antibodies

Protocol (PDF): Protocols for antibody-based detection

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