Lead Exposure Triggers DNA Damage in TK6 Cells Via Alteration of DNA Repair Gene Expression and Hypermethylation of Ku80 Promoter Region - Kuibin Han; Xin Liu; Yuhan Pang; Xiaoyue Zhao; Chunyan Lang; Zhiyuan Han; Chunping Wang; Tuanwei Wang (Biological Trace Element Research, 2026)