title: Frequency of reactions to alum precipitated ragweed extract.
mesh_terms: D000485:Allergens; D000535:Aluminum; D001249:Asthma / Q000276:immunology; D011232:Chemical Precipitation; D005260:Female; D006801:Humans; D007279:Injections, Subcutaneous; D008297:Male; D008722:Methods; D010936:Plant Extracts / Q000008:administration & dosage; D006109:Poaceae; D011188:Potassium; D006255:Rhinitis, Allergic, Seasonal / Q000276:immunology; D012882:Skin Tests; D013431:Sulfates; D013997:Time Factors
chemical_list: D000485:Allergens; D010936:Plant Extracts; D013431:Sulfates; D000535:Aluminum; D011188:Potassium