human human cell controlled study 174 Humans 162 metabolism 132 article 96 drug effect 96 Article 92 drug effects 92 priority journal 92 unclassified drug 86 nonhuman 74 Animals 72 animal 68 female 62 protein expression 58 in vitro study 56 mouse 56 Female 54 cell proliferation 54 apoptosis 52 chemistry 50 animal cell 48 Mice 46 physiology 46 signal transduction 46 tumor cell line 46 Cell Line, Tumor 42 cell line 42 genetics 42