title: Contact allergy: competitive roles of effector and suppressor cells.
mesh_terms: D000485:Allergens / Q000276:immunology; D003877:Dermatitis, Contact / Q000276:immunology*; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000276:immunology; D006801:Humans; D007111:Immunity, Cellular; D007694:Killer Cells, Natural / Q000276:immunology*; D007801:Langerhans Cells / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D000485:Allergens; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II