title: Regulatory control and standardization of allergenic extracts. The clinical trial protocol.
mesh_terms: D000485:Allergens / Q000592:standards; D002986:Clinical Trials as Topic; D003365:Costs and Cost Analysis; D003888:Desensitization, Immunologic; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis / Q000628:therapy; D007258:Informed Consent; D010919:Placebos; D013223:Statistics as Topic
chemical_list: D000485:Allergens; D010919:Placebos