title: Treatment improved for ragweed, penicillin allergy.
mesh_terms: D000485:Allergens / Q000276:immunology*; D000941:Antigens; D003888:Desensitization, Immunologic / Q000379:methods; D004342:Drug Hypersensitivity / Q000628:therapy*; D006801:Humans; D010406:Penicillins / Q000276:immunology*; D011108:Polymers; D006255:Rhinitis, Allergic, Seasonal / Q000628:therapy*
chemical_list: D000485:Allergens; D000941:Antigens; D010406:Penicillins; D011108:Polymers