• Research Assistant on a genetic association study of diabetes and obesity under the supervision of Mahsa Mohamadi Amoli, Ph.D., M.D. The aim of this study was to examine the role of adenosine deaminase gene polymorphism in randomly selected obese subjects in an Iranian population. and the main techniques used in this study included DNA extraction of controls from anticoagulated blood collected in EDTA using salting out method also Biallelic polymorphism in intron 1 of ADA gene was examined with PCR-RFLP.• Working as a Research Assistant on a study of MDR1 gene SNPs in Iranian epilepsy patients (sensitive to therapy v multidrug resistant) under the supervision of Morteza Karimipoor, M.D., Ph.D. • Phlebotomizing of epileptic patients of Kurosh Gharagozli, M.D., Associate Professor of Neurology and Educational Deputy Of Loghman Hakim Hospital.• Working as a Research Assistant on a genetic association study of alpha and beta thalassemia carriers in Iranian patients under the supervision of Benaz Zarbakhsh, DVM.• Cell Biology group, Molecular Life Science, Jacobs University Bremen, Bremen, GermanyWorking on the master thesis “Thyroid hormone-mediated effects on the brain of cathepsin K-deficient mice” under the supervision of Professor Klaudia Brix