1Landesbetrieb Hessisches Landeslabor, Schubertstrasse 60, Haus 13. D-35392, Giessen, Germany,
2Institute of Internal Medicine and Animal Infectious Disease, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Cairo, Egypt,
3GD Animal Health Service, Department of Bacteriology and Parasitology, Postbus 9, 7400 AA Deventer, The Netherlands,
4Institut f? Tier?ztliche Nahrungsmittelkunde, Justus-Liebig-Universit?, Frankfurterstr. 92, Giessen, Germany,
5Regierungspr?idum Giessen, Dez. 51.2, Schanzenfeldstrasse 8, 35578 Wetzlar, Germany
1Landesbetrieb Hessisches Landeslabor, Schubertstrasse 60, Haus 13. D-35392, Giessen, Germany,
2Institute of Internal Medicine and Animal Infectious Disease, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Cairo, Egypt,
3GD Animal Health Service, Department of Bacteriology and Parasitology, Postbus 9, 7400 AA Deventer, The Netherlands,
4Institut f? Tier?ztliche Nahrungsmittelkunde, Justus-Liebig-Universit?, Frankfurterstr. 92, Giessen, Germany,
5Regierungspr?idum Giessen, Dez. 51.2, Schanzenfeldstrasse 8, 35578 Wetzlar, Germany
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Corresponding author:
Abdulwahed Ahmed Hassan , Tel: 31-570-66-0640,