Letter: Allpyral extracts.
D000485:Allergens / Q000008:administration & dosage; D003888:Desensitization, Immunologic; D006801:Humans; D010936:Plant Extracts / Q000276:immunology*; D006255:Rhinitis, Allergic, Seasonal / Q000628:therapy*
D000485:Allergens; D010936:Plant Extracts