Ayse Basak ENGIN, M.Sc., Ph.D., Ph.D., E.R.T., ATS received her undergraduate degree in Pharmacy and MSc. degree in Toxicology from Hacettepe University. She completed her PhD studies in Toxicology and Immunology at Gazi University. She is currently working at the same University, Faculty of Pharmacy, Department of Toxicology as a full professor. Dr. Engin authored/co-authored several publications, book chapters and edited 4 books. She has been awarded Blair-Curtius-Pfleiderer-Wachter Award for Pteridine Research and Turkish Pharmaceutical Science Academy Young Scientist Award. Her work is mainly focused on pteridines and tryptophan metabolism-neurotoxicology, immunotoxicology and nanosafety-nanomedicine. Atilla ENGIN M.D., Ph.D. was formerly Professor of General Surgery at Gazi University. He is currently professor emeritus. He earned Ph.D. in Biochemistry from Hacettepe University. His doctoral research led to discovery of the relationship betweenthe cancer growth-rate and tissue glutathione concentrations, and these works have been cited for several times and won the “Science Award in Surgery”. He is a pioneer scientist in experimental surgery. His nationally and internationally funded research projects’ findings, book chapters and edited 7 books have been cited in numerous international publications. While some of these outcomes received national and international awards, some of them were included into scientific databases. His work is mainly focused on oxidative stress, endocrine and metabolic pathways.