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MHC Class II DQ DR Polymorphic antibody | 49.1

Mouse anti Sheep MHC Class II DQ DR Polymorphic:FITC

Product Type
Monoclonal Antibody
MHC Class II DQ DR Polymorphic

Product Code Applications Pack Size List Price Your Price Qty
Datasheet Datasheet Datasheet
SDS Safety Datasheet SDS
F 0.1 mg loader
List Price Your Price

Mouse anti Sheep MHC class II Dq DR antibody, clone 49.1 recognizes a polymorphic epitope on ovine MHC class II DQ and DR molecules, constitutively expressed on antigen presenting cells including dendritic cells, B lymphocytes, monocytes, macrophages, activated T lymphocytes and may be induced on a range of other cell types by interferon gamma.

The major histocompatibility complex (MHC) is a cluster of genes some of which are important in the immune response to infection. In sheep, this complex is referred to as the ovine leukocyte antigen (OLA) region. There are 2 major types of MHC class IIa molecules encoded by the OLA which are DR and DQ each composed of an alpha and beta chain.

Mouse anti Sheep MHC class II Dq DR antibody, clone 49.1 recognizes ovine MHC II transfectants DQ - T28.1, DQ - T26.2 and DR - T31.3 but not DR - T8.1 (Ballingall et al. 1995).

Target Species
Species Cross-Reactivity
Target SpeciesCross Reactivity
N.B. Antibody reactivity and working conditions may vary between species.
Product Form
Purified IgG conjugated to Fluorescein Isothiocyanate Isomer 1 (FITC) - liquid
Purified IgG prepared by affinity chromatography on Protein A from tissue culture supernatant
Buffer Solution
Phosphate buffered saline
Preservative Stabilisers
0.09% sodium azide (NaN3)
1% bovine serum albumin
Approx. Protein Concentrations
IgG concentration 0.1 mg/ml
Max Ex/Em
Fluorophore Excitation Max (nm) Emission Max (nm)
FITC 490 525
For research purposes only
12 months from date of despatch

This product is shipped at ambient temperature. It is recommended to aliquot and store at -20°C on receipt. When thawed, aliquot the sample as needed. Keep aliquots at 2-8°C for short term use (up to 4 weeks) and store the remaining aliquots at -20°C.

Avoid repeated freezing and thawing as this may denature the antibody. Storage in frost-free freezers is not recommended. This product is photosensitive and should be protected from light.

This product has been reported to work in the following applications. This information is derived from testing within our laboratories, peer-reviewed publications or personal communications from the originators. Please refer to references indicated for further information. For general protocol recommendations, please visit the antibody protocols page.
Application Name Verified Min Dilution Max Dilution
Flow Cytometry 1/10
Where this product has not been tested for use in a particular technique this does not necessarily exclude its use in such procedures. Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own system using appropriate negative/positive controls.
Flow Cytometry
Use 10μl of the suggested working dilution to label 1 x 106 cells in 100μl

How to Use the Spectraviewer

Watch the Tool Tutorial Video ▸
  • Start by selecting the application you are interested in, with the option to select an instrument from the drop down menu or create a customized instrument
  • Select the fluorophores or fluorescent proteins you want to include in your panel to check compatibility
  • Select the lasers and filters you wish to include
  • Select combined or multi-laser view to visualize the spectra

Description Product Code Applications Pack Size List Price Your Price Quantity
Mouse IgG2a Negative Control:FITC MCA929F F 100 Tests loader
List Price Your Price
Description Mouse IgG2a Negative Control:FITC

References for MHC Class II DQ DR Polymorphic antibody

  1. Puri, N.K. et al. (1987) Monoclonal antibodies to sheep MHC class I and class II molecules: biochemical characterization of three class I gene products and four distinct subpopulations of class II molecules.
    Vet Immunol Immunopathol. 15 (1-2): 59-86.
  2. Puri, N.K. & Brandon, M.R. (1987) Sheep MHC class II molecules. II. Identification and characterization of four distinct subsets of sheep MHC class II molecules.
    Immunology. 62 (4): 575-80.
  3. Puri, N.K. et al. (1987) Monoclonal antibodies to sheep MHC class II molecules recognize all HLA-D or subsets of HLA-D region products.
    Hum Immunol. 20 (3): 195-207.
  4. Ballingall, K.T. et al. (1995) Analysis of the fine specificities of sheep major histocompatibility complex class II-specific monoclonal antibodies using mouse L-cell transfectants.
    Anim Genet. 26 (2): 79-84.
  5. Kallapur, S.G. et al. (2011) Pulmonary and systemic inflammatory responses to intra-amniotic IL-1α in fetal sheep.
    Am J Physiol Lung Cell Mol Physiol. 301 (3): L285-95.
  6. Gorrell, M.D. et al. (1988) Lymphocyte phenotypes in the intestinal mucosa of sheep infected with Trichostrongylus colubriformis.
    Clin Exp Immunol. 72 (2): 274-9.
  7. Stenfeldt, C. et al. (2015) Clinical and virological dynamics of a serotype O 2010 South East Asia lineage foot-and-mouth disease virus in sheep using natural and simulated natural inoculation and exposure systems.
    Vet Microbiol. 178 (1-2): 50-60.
  8. Stenfeldt, C. et al. (2015) Pathogenesis of Primary Foot-and-Mouth Disease Virus Infection in the Nasopharynx of Vaccinated and Non-Vaccinated Cattle.
    PLoS One. 10 (11): e0143666.
  9. View The Latest Product References
  10. Stenfeldt, C. et al. (2016) The Foot-and-Mouth Disease Carrier State Divergence in Cattle.
    J Virol. 90 (14): 6344-64.
  11. Stenfeldt, C. et al. (2019) Virulence beneath the fleece; a tale of foot-and-mouth disease virus pathogenesis in sheep.
    PLoS One. 14 (12): e0227061.



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