1. Division of Toxicology, Wageningen University, Tuinlaan 5, 6703 HE Wageningen, The Netherlands, Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands, TNO Quality of Life, P.O. Box 360, 3700 AJ Zeist, The Netherlands, Laboratory of Biochemistry, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands, Department of Tanning Materials & Proteins, National Research Centre, 12622 Dokki, Cairo, Egypt, and WU/TNO Centre for Food Toxicology...