Thymidine article 10 Animals 8 DNA 8 Human 6 animal cell 6 controlled study 6 human 6 nonhuman 6 normal human 6 priority journal 6 thymidine 6 thymidine h 3 6 Cell Division 4 Cell Survival 4 Cells, Cultured 4 Female 4 Kinetics 4 Lymphocyte Activation 4 Male 4 Mice 4 Support, Non-U.S. Gov't 4 female 4 human cell 4 in vitro study 4 male 4 mouse 4 phytohemagglutinin 4 radioisotope 4 8-oxo-7 ,8-dihydroguanine 2