title: Letter: Bronchial challenge studies with cockroach antigen in asthmatic children.
mesh_terms: D000336:Aerosols; D000485:Allergens; D000941:Antigens / Q000008:administration & dosage*; D001249:Asthma / Q000276:immunology*; D003058:Cockroaches / Q000276:immunology*; D006801:Humans
chemical_list: D000336:Aerosols; D000485:Allergens; D000941:Antigens