1- The 1st Congress of Clinical Pathology Department, Al Azhar University. Cairo, Egypt, 12th May 2004.
2- The 28th, Scientific conference of The Egyptian Society of Histology and Cytology (Al-Azhar Faculty of Medicine 30 December, 2004).
3- Scientific conference of The Egyptian Veterinary Medical Society for Pathology and Clinical Pathology 25- 26 June 2006.
4- Scientific conference of Egyptian Society for Animal management 30- 31 Octobre 2006.
