title: Immunohistochemical investigation of the cross-reactivity of selected cell markers from various species for characterization of lymphatic tissues in the harbour porpoise (Phocoena phocoena).
abstract: To facilitate a detailed investigation of cetacean lymphoid organs, 13 canine-, six bovine-, one equine-, one human- and four killer whale-specific monoclonal antibodies (mAbs) directed against cell surface antigens of the haematopoietic system (including CD2, CD4, CD8, CD45R, MHC class II, granulocyte, thrombocyte, pan-T cell and B-cell antigen), as well as a mAb and a polyclonal antibody (pAb) directed against the -peptide of the human CD3 complex, were tested for immunohistochemical cross-reactivity on frozen or formalin-fixed, paraffin wax-embedded lymphatic tissues of harbour porpoises. Eight of 26 mAbs and the pAb showed a specific reaction with harbour porpoise cells. Lymphocytes in T-cell compartments were labelled by the mAb and the pAb directed against the CD3 complex and by two killer whale mAbs specific for CD2 antigen. CD45R, labelled by a killer whale-specific mAb, was strongly expressed on B and weakly on T cells. MHC class II antigen, recognized by killer whale- and bovine-specific mAbs, was expressed on B and T cells. A canine MHC class II-specific mAb recognized an epitope on the surface of antigen-presenting cells and B lymphocytes. An anti-equine-pan-leucocyte marker labelled the majority of cells in B- and T-cell compartments. Thus, with leucocyte antigen markers from various species, it is now possible to determine the phenotype of lymphocytes in normal and diseased lymphoid organs of harbour porpoises.
authors.affiliation: Institut für Veterinär-Pathologie, Justus-Liebig-Universität Giessen, Frankfurter Strasse 96, Giessen, 35392, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Beineke
authors.forename: U
authors.initials: U
authors.lastname: Siebert
authors.forename: A
authors.initials: A
authors.lastname: Wünschmann
authors.forename: J L
authors.initials: JL
authors.lastname: Stott
authors.forename: I
authors.initials: I
authors.lastname: Prengel
authors.forename: E
authors.initials: E
authors.lastname: Kremmer
authors.forename: W
authors.initials: W
authors.lastname: Baumgärtner
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D000954:Antigens, Surface / Q000276:immunology; D002417:Cattle; D003429:Cross Reactions; D004285:Dogs; D019084:Fluorescent Antibody Technique, Indirect; D006801:Humans; D007124:Immunoenzyme Techniques; D008208:Lymphatic System / Q000276:immunology*; D008214:Lymphocytes / Q000166:cytology / Q000276:immunology; D019576:Porpoises / Q000276:immunology*; D013045:Species Specificity
chemical_list: D000911:Antibodies, Monoclonal; D000954:Antigens, Surface