1. Università di Milano, Department of Health, Animal Science and Food Safety, 20134 Milan, Italy.
2. Plantechno S.r.l., 26040 Vicomoscano, Cremona, Italy.
3. Università di Milano, Department of Animal Pathology, Hygiene and Veterinary Public Health, 20133 Milan, Italy.
4. Laboratory of Immunology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
5. Catholic University, Institute of Agronomy, Genetics and Field Crops, 29100 Piacenza, Italy.