title: Allergenic extracts: characterization, standardization, and prospects for the future.
mesh_terms: D000485:Allergens / Q000592:standards*; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D003378:Counterimmunoelectrophoresis; D006636:Histamine Release; D006801:Humans; D007120:Immunochemistry; D007525:Isoelectric Focusing; D009584:Nitrogen / Q000032:analysis; D011446:Prospective Studies; D011506:Proteins / Q000032:analysis; D011852:Radioallergosorbent Test; D012882:Skin Tests; D014020:Tissue Extracts / Q000276:immunology*
chemical_list: D000485:Allergens; D011506:Proteins; D014020:Tissue Extracts; D009584:Nitrogen