title: Ovine cutaneous squamous cell carcinoma: immunohistochemical expression of CD3, CD4, CD8 and MHC class II antigens in the associated inflammatory infiltrate.
abstract: The immunohistochemical expression of CD3, CD4, CD8 and MHC class II antigens in the cellular inflammatory infiltrate associated with early and advanced ovine squamous cell carcinomas (OSCC), as well as actinic keratosis was analyzed. The majority of the peritumoral and intratumoral lymphocytes reacted with the anti-human CD3 polyclonal antibody. The number of CD8+ T lymphocytes increased in advanced OSCC compared with that of actinic keratosis and early OSCC, whereas the number of CD4+ lymphocytes was similar in early and advanced OSCC. Tumor cells were unreactive with the anti-MHC class II antibody, but the majority of the mononuclear cellular infiltrate expressed this antigen in early and advanced tumors.
authors.affiliation: Department of Comparative Pathology, Veterinary Faculty, University of Córdoba, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Mozos
authors.forename: A
authors.initials: A
authors.lastname: Méndez
authors.forename: M P
authors.initials: MP
authors.lastname: Martín
authors.forename: P
authors.initials: P
authors.lastname: Herráez
authors.forename: J
authors.initials: J
authors.lastname: Pérez
mesh_terms: D000818:Animals; D017252:CD3 Complex / Q000378:metabolism; D015704:CD4 Antigens / Q000378:metabolism; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology / Q000473:pathology; D016827:CD8 Antigens / Q000378:metabolism; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D000949:Histocompatibility Antigens Class II / Q000378:metabolism*; D007150:Immunohistochemistry; D007249:Inflammation / Q000276:immunology / Q000473:pathology / Q000662:veterinary; D007642:Keratosis / Q000276:immunology / Q000473:pathology / Q000662:veterinary; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology* / Q000473:pathology; D012878:Skin Neoplasms / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D016176:T-Lymphocyte Subsets / Q000276:immunology* / Q000473:pathology
chemical_list: D017252:CD3 Complex; D015704:CD4 Antigens; D016827:CD8 Antigens; D000949:Histocompatibility Antigens Class II