1. Department of Anatomy, College of Veterinary Medicine King Faisal University Al‐Ahsa Saudi Arabia
2. Department of Anatomy, Faculty of Veterinary Medicine University of Khartoum Khartoum Sudan
3. Department of Biomedical Sciences, College of Veterinary Medicine King Faisal University Al‐Ahsa Saudi Arabia
4. Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine Mansoura University Mansoura Egypt
5. Department of Anatomy, College of Veterinary Medicine University of Bahri Khartoum Sudan