title: Allergen exposure and asthma.
authors: A
authors: A
authors: Bush
mesh_terms: D000485:Allergens; D001249:Asthma / Q000175:diagnosis / Q000209:etiology*; D002648:Child; D004992:Ethics, Medical; D006801:Humans; D018962:Phlebotomy
chemical_list: D000485:Allergens