Article Humans human 146 unclassified drug controlled study 120 metabolism 104 nonhuman 84 human cell 80 Animals 76 animal 76 priority journal 72 chemistry 62 drug effects 62 protein expression 48 animal cell 42 in vitro study 40 mouse 40 genetics 38 animal experiment 34 Mice 32 female 32 tumor cell line 32 Cell Line, Tumor 30 male 30 Female 28 Male 28 HEK293 Cells 26 HEK293 cell line 26 pathology 26 protein function 26