1. Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom, Norfolk Fruit Growers Ltd., Tunstead Road, Hoveton, United Kingdom, Plant Biotechnology Unit, IAM, BOKU, Vienna, Austria, Laboratory of Allergy Research, Department of Experimental Immunology, Amsterdam Medical Centre, Amsterdam, The Netherlands, and Department of Pathophysiology, Medical University of Vienna, Waehringer Guertel, Vienna, Austria