Immunology; allergic reactions and their treatment.
D000937:Antigen-Antibody Reactions; D003877:Dermatitis, Contact / Q000276:immunology; D004342:Drug Hypersensitivity / Q000276:immunology; D005512:Food Hypersensitivity / Q000276:immunology; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology*; D007299:Insect Bites and Stings / Q000276:immunology; D012130:Respiratory Hypersensitivity / Q000276:immunology