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Bu-1a/b antibody | AV20

Mouse anti Chicken Bu-1a/b

Product Type
Monoclonal Antibody

Product Code Applications Pack Size List Price Your Price Qty
Datasheet Datasheet Datasheet
SDS Safety Datasheet SDS
C F IP 0.25 mg loader
List Price Your Price

Mouse anti Chicken Bu-1a/b antibody, clone AV20 recognizes Chicken Bu-1a/b, also known as chB6, a type 1 transmembrane protein.

Bu-1 is a product of two alleles, Bu-1a ad Bu-1b, clone AV20 recognises both alleles. The Bu-1 antigen is expressed by chicken B-cells throughout most of their development and by a subset of monocytes and macrophages. The antigen is absent from erythrocytes, granulocytes and thrombocytes. In addition to clone AV20, clone L22 that recognises Bu-1a but not Bu-1b is available.

Target Species
Species Cross-Reactivity
Target SpeciesCross Reactivity
Guinea Fowl
N.B. Antibody reactivity and working conditions may vary between species.
Product Form
Purified IgG - liquid
Purified IgG prepared by ion exchange chromatography from tissue culture supernatant
Buffer Solution
Borate buffered saline
Preservative Stabilisers
<0.1% Sodium Azide (NaN3)
Bursal cells from day old H.B15 (Bu-1a/b) chickens.
Approx. Protein Concentrations
IgG concentration 0.5mg/ml
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 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
Immunohistology - Frozen
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 10ul of the suggested working dilution to label 1x106 cells in 100ul.

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Source Reference

  1. Rothwell, C.J. et al. (1996) Identification of chicken Bu-1 alloantigens using the monoclonal antibody AV20.
    Vet Immunol Immunopathol. 55 (1-3): 225-34.

References for Bu-1a/b antibody

  1. Tregaskes, C.A. et al. (1996) Chicken B-cell marker chB6 (Bu-1) is a highly glycosylated protein of unique structure.
    Immunogenetics. 44 (3): 212-7.
  2. Baigent, S.J. & Davison, T.F. (1999) Development and composition of lymphoid lesions in the spleens of Marek's disease virus-infected chickens: Association with virus spread and the pathogenesis of Marek's disease.
    Avian Pathol. 28 (3): 287-300.
  3. Barrow, A.D. et al. (2003) Infection of macrophages by a lymphotropic herpesvirus: a new tropism for Marek's disease virus.
    J Gen Virol. 84 (Pt 10): 2635-45.
  4. Tregaskes, C.A. et al. (2005) Conservation of biological properties of the CD40 ligand, CD154 in a non-mammalian vertebrate.
    Dev Comp Immunol. 29 (4): 361-74.
  5. Igyár;rtó BZ et al. (2008) Identification of the avian B-cell-specific Bu-1 alloantigen by a novel monoclonal antibody.
    Poult Sci. 87 (2): 351-5.
  6. Meyerhoff, R.R. et al. (2012) Comprehensive analysis of commercially available mouse antichicken monoclonal antibodies for cross-reactivity with peripheral blood leukocytes from commercial turkeys.
    Poult Sci. 91 (2): 383-92.
  7. Balic, A. et al. (2014) Visualisation of chicken macrophages using transgenic reporter genes: insights into the development of the avian macrophage lineage.
    Development. 141: 3255-65.
  8. Sadeyen, J.R. et al. (2015) A cyclophosphamide-sensitive cell compartment is essential for homologous protection conferred by licensed vaccines for the control of avian pathogenic Escherichia coli. in chickens.
    Vaccine. 33 (31): 3624-7.
  9. View The Latest Product References
  10. Schermuly, J. et al. (2015) In vitro model for lytic replication, latency, and transformation of an oncogenic alphaherpesvirus.
    Proc Natl Acad Sci U S A. 112 (23): 7279-84.
  11. Ellis, S. et al. (2018) Recombinant Infectious Bronchitis Viruses Expressing Chimeric Spike Glycoproteins Induce Partial Protective Immunity against Homologous Challenge despite Limited Replication In Vivo.
    J Virol.92 (23): e01473-18.
  12. Alber, A. et al. (2019) Avian Pathogenic Escherichia coli (APEC) Strain-Dependent Immunomodulation of Respiratory Granulocytes and Mononuclear Phagocytes in CSF1R-Reporter Transgenic Chickens.
    Front Immunol. 10: 3055.

Bursal Antigen 1 A/B


150541 161337 167960

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