title: Trials of alum-precipitated pollen extracts in the treatment of hay fever.
mesh_terms: D000535:Aluminum; D000906:Antibodies / Q000032:analysis; D003888:Desensitization, Immunologic; D006636:Histamine Release; D006801:Humans; D010919:Placebos; D010936:Plant Extracts; D011058:Pollen; D006255:Rhinitis, Allergic, Seasonal / Q000628:therapy*
chemical_list: D000906:Antibodies; D010919:Placebos; D010936:Plant Extracts; D000535:Aluminum