1. 1Institute of Biology and Animal Nutrition, Calea Bucuresti 1, 077015 Balotesti, Romania
2. 2Mycotoxicology Unit, National Veterinary School of Toulouse, 23 chemin des capelles, 31076 Toulouse cedex, France
3. 3Faculty of Biology, University of Bucharest, 36-46 M. Kogalniceanu Boulevard, 70709 Bucharest, Romania