The molecular genetic events of radiation effect The radiation damage to cells include :1. Induction of early-response genes such as c-jun and Egr-1 genes.2. Induction of later-response genes such as tumor necrosis factor- (TNF- ), fibroblast growth factor (FGF), and platelet-derived growth factor- (PDGF-).3. Activation of interleukin-1 (IL-1) and PKC.4. Activation of oncogenes such as c-myc and K-ras genes.Copyright (c) 2017 McGraw-Hill Education. All