Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala SE-750 07, Sweden.|Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam XH, The Netherlands.|Swedish National Food Agency, Uppsala, Sweden.|Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala SE-750 07, Sweden.|Department of Biology and Biological Engineering, Food and Nutrition Science, Chalmers University of Technology, Gothenburg SE-412 96, Sweden.