1. Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
2. Department of Zoonoses, Faculty of Veterinary Medicine, Zagazig University, Zagazig Egypt.
3. Educational Veterinary Hospital, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
4. Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
5. Department of Botany, Faculty of Science, Zagazig University, Zagazig, Egypt.