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  • Title: Cross-reactivity with bovine cells of monoclonal antibodies submitted to the 6th International Workshop on Human Leukocyte Differentiation Antigens.
    Author: Sopp P, Kwong LS, Howard CJ.
    Journal: Vet Immunol Immunopathol; 2001 Jan 26; 78(2):197-206. PubMed ID: 11182157.
    Abstract:
    Twelve subpanels of monoclonal antibodies (MAb) included within the 6th International Workshop on Human Leukocyte Differentiation Antigens (6th HLDA) were assayed for reactivity with bovine peripheral blood leukocytes. Sixty-nine of the 807 MAb (8.6%) stained bovine cells. These MAb represented 30 different human CD groups. Nine of the MAb to different human CD antigens (CD19, CD23, CD39, CD47, CD86, CD117, CD120b, CDw149, CD165) potentially recognized antigens on cattle cells that had not previously been identified. These were investigated further by two-colour immunofluorescence to compare the cellular expression of the antigen on cattle cells with that reported for the different CD antigens in humans. Four of the MAb that belonged to CD23, CD39, CD47, and CDw149 stained bovine cells in a manner that indicated an almost identical cellular distribution of the antigen to that reported in humans. This implied that these MAb reacted with the homologous cattle molecules. Further work would be necessary to confirm specificity of CD19, CD86, CD117, CD120b and CD165 MAb. Other cross-reacting MAb either recognized antigens already defined in cattle or antigens not yet clustered in humans. The study has identified valuable new reagents for studies of cattle and confirmed that most common cross-reactive MAb are to epitopes on integrins.
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