Dr. Mossa is working as Professor in National Research Centre. He has successfully completed his Administrative responsibilities as Professor. His research has included toxicology and environmental toxicology. Based on this research and fellowship training he has received several awards and honors, such as: NRC award of research output 2011,2012,2013,2014. He is serving as an editorial member of several reputed journals like Frontiers in Environmental Toxicology “Associate Editor”, International Journal of Agricultural Research “Regional Editor”, Journal of Pharmacology and Toxicology, Journal of Basic & Applied Sciences, Research Journal of Environmental Toxicology & expert Reviewers for journals like Pesticide Biochemistry and Physiology, Food and Chemical Toxicology, Hazardous Materials, Ecotoxicology and Environmental Safety, Environmental Toxicology, Human and Experimental Toxicology, Toxicology and Industrial Health, Frontiers in Environmental Toxicology and Science Alert Journals. He has authored 53 research articles. He is a member of Egyptian Society of Toxicology, Egyptian Society of Chemistry and Arabic Society of Medicine Research.