Bachelor of veterinary science, May 1989, Faculty of veterinary medicine, Alexandria University – Egypt. Master of veterinary pathology, June 1993, Faculty of veterinary medicine, Alexandria University- Egypt. Ph-D in veterinary pathology, December 1996, Faculty of veterinary medicine, Alexandria University- Egypt  . Assistant professor of pathology, Dept. of pathology and parasitology. Faculty of Vet.Med., Alex.Univ., Egypt. (2005 till 2011).  Consultant veterinarian in El-Kobeier fish farm, Burydah, El-Qassim, K.S.A.(1999-2003).  Research supervisor, Faculty of medicine, El-Qassim university. (2003 till now).  Assistant professor of Pathology, College of Medicine, El-Qassim University, KSA. (2010-till now ).  Professor of Pathology, Dept. of Pathology. Faculty of Vet.Med., Alex.Univ., Egypt. (2011 till now ).  Head of Pathology Department, Faculty of Vet.Med., Alex.Univ., Egypt.from3/6/2018 till now.  Member of college council, Faculty of Vet.Med., Alex.Univ., Egypt.  Head of the IACUC(Chairperson ), college of Veterinary Medicine, Alexandria University,from28/4/2019 till now.

Dr. Elsayed Eldeeb Mehana's research interests are Environmental pollution in fish, Heavy metals pollution in fish, cattle, laboratory animals, Tumor diagnosis using tumor markers, Experimental pathology of aflatoxicosis, Oxidative stress, and antioxidants in animals.