1. Veterinary Serum and Vaccine Research Institute, Cairo, Egypt.
2. Department of Rinder Pest like Diseases, Veterinary Serum and Vaccine Research Institute, Agriculture Research Center, Cairo, Egypt.
3. Anaerobic Bacterial Vaccine Research Department, Veterinary Serum and Vaccine Research Institute, Cairo, Egypt.
4. Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, Cairo, Egypt.
5. Animal Health Department, Desert Research Center, Cairo, Egypt.
6. Academy of Scientific Research and Technology (ASRT), Cairo, Egypt.