Abstract: Evaluation of DNA damage in lymphocytes of radiology personnel by comet assay: Muhammad KHISROON, et al. Department of Zoology, University of Peshawar, Pakistan—Objectives: The importance of X-rays as a diagnostic medical tool cannot be denied. However, continuous exposure to X-rays can cause DNA damage. This study aimed to use the comet assay technique to investigate the level of DNA damage in lymphocytes due to X-rays in occupationally exposed personnel.