human Humans 112 controlled study 90 human cell 88 article 80 Animals 64 nonhuman 64 protein expression 60 cell cycle 58 priority journal 58 cell proliferation 56 apoptosis 54 metabolism 54 Cell Cycle 52 unclassified drug 50 Apoptosis 38 Cell Line, Tumor 38 Mice 36 animal cell 36 signal transduction 36 Cell Proliferation 34 DNA damage 34 mouse 34 animal 32 DNA 30 DNA Damage 30 Article 28 cell cycle progression 28 Cell Line 26 DNA repair 26