title: Where is the allergic reaction in ragweed asthma?
mesh_terms: D000397:Air Pollution; D000941:Antigens; D001249:Asthma / Q000276:immunology*; D001980:Bronchi / Q000276:immunology; D006801:Humans; D007106:Immune Sera; D007116:Immunization, Passive; D007073:Immunoglobulin E; D009297:Nasal Mucosa / Q000276:immunology; D009500:Neutralization Tests; D010316:Particle Size; D010614:Pharynx / Q000276:immunology; D011058:Pollen
chemical_list: D000941:Antigens; D007106:Immune Sera; D007073:Immunoglobulin E