Mahmoud Mohamed Elalfy Elhefnawy graduated from Ali mobark High School in Dikerness Dakahlia, Egypt. I graduated in veterinary medical Sciences and had master work at Mansoura university in forensic medicine and toxicology. Mahmoud Elhefnawy received a scholarship for PhD in Fraunhofer institute for toxicology and experimental medicine (2008-2011). This PhD degree emphasized Molecular Biology, Genetics and imaging modalities in liver cancer with cooperation with excellent cluster research of pharmaco-toxicogenomics institute, pathology and radiology institutes of medical school of Hannover Germany. I later complete my research in University of Mansoura University, Egypt and still share in education, research and reviewing of forensic medicine and toxicology specialist on Mansoura University till now I have cooperation research with Zigzag university, Alexandria university and also in KSA as Abha University. I share in reviewing and also as editorial board of many journals.