396 Int. J. Low Radiation, Vol. 9, Nos. 5/6, 2014 Copyright © 2014 Inderscience Enterprises Ltd. Expression of IFNg and TGFb1 genes can distinguish radiation workers from the normal population Reza Fardid* Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran and Medical Physics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Email: rfardid@gmail.com *Corresponding author Mohammad Taghi Bahreyni-Toossi Medical Physics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Email: bahreynimt@mums.ac.ir Abdolrahim Rezaee Immunology Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Email: rezaeer@mums.ac.ir Ariane Sadr-nabavi Medical Genetic Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Email: sadrnabavia@mums.ac.ir