title: Variations in delayed hypersensitivity skin test responses.
mesh_terms: D000949:Histocompatibility Antigens Class II / Q000276:immunology; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D012882:Skin Tests; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000949:Histocompatibility Antigens Class II