Article Humans drug effects human controlled study 102 metabolism 78 human cell 66 unclassified drug 62 nonhuman 60 priority journal 58 Animals 54 animal 54 genetics 46 protein expression 40 chemistry 34 mouse 34 signal transduction 32 apoptosis 30 female 30 in vitro study 30 male 30 Cell Line, Tumor 28 Female 28 animal cell 28 tumor cell line 28 Male 26 Mice 26 pathology 26 animal experiment 24 cell line 22