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Updated: Aug 9, 2026

Development of an in vitro model system for studying the interaction of Equus caballus IgE with its high-affinity receptor FcεRI
Published on: November 1, 2014
Reactivity of workshop antibodies with a non-ruminant species: crossreactivity with canine blood leukocytes
S H-Joachim1, A Beer, H U Rabe
1Immunology Unit, School of Veterinary Medicine, Hannover, Germany. jschub@immunologie.tiho-hannover.de
Three-hundred and eight monoclonal antibodies detecting surface determinants on ruminant cells were tested on canine leukocytes by flow cytometry. Thirty mabs showed crossreactivity: 25 of them reacted uniformly with cells of three unrelated dogs, five displayed a polymorphic reaction pattern. Thus, in addition to mabs with yet unknown specificity, antibodies to ruminant WC9, B-cell antigens and possible CD29, CD49d cross-react with canine cells, and probably react with the homologous canine antigen.
Three-hundred and eight monoclonal antibodies detecting surface determinants on ruminant cells were tested on canine leukocytes by flow cytometry. Thirty mabs showed crossreactivity: 25 of them reacted uniformly with cells of three unrelated dogs, five displayed a polymorphic reaction pattern. Thus, in addition to mabs with yet unknown specificity, antibodies to ruminant WC9, B-cell antigens and possible CD29, CD49d cross-react with canine cells, and probably react with the homologous canine antigen.

