Article human 140 human cell priority journal controlled study 128 Humans 96 metabolism 80 nonhuman 60 in vitro study 52 unclassified drug 50 protein expression 48 signal transduction 40 animal cell 38 female 38 Animals 36 animal 36 mouse 36 animal experiment 32 drug effects 32 genetics 32 cell proliferation 30 immunology 30 Female 28 Mice 24 animal model 24 apoptosis 24 cell line 24 cytology 24 interleukin 10 24 Western blotting 22