title: Regulatory control and standardization of allergenic extracts. Modified extracts.
mesh_terms: D000485:Allergens / Q000276:immunology* / Q000592:standards / Q000627:therapeutic use; D004335:Drug and Narcotic Control; D005557:Formaldehyde; D005976:Glutaral; D006801:Humans; D006967:Hypersensitivity / Q000628:therapy*; D007165:Immunosuppression Therapy; D007167:Immunotherapy; D007391:International Cooperation; D011058:Pollen / Q000276:immunology; D014020:Tissue Extracts / Q000276:immunology; D014481:United States
chemical_list: D000485:Allergens; D014020:Tissue Extracts; D005557:Formaldehyde; D005976:Glutaral