Article animal cell nonhuman 220 priority journal controlled study 202 Animals 178 animal 172 metabolism 138 mouse 128 animal experiment 118 animal tissue 92 Mice 88 male 82 female 80 unclassified drug 80 drug effects 72 animal model 66 human 64 protein expression 64 physiology 56 Female 52 Male 52 genetics 52 in vitro study 52 Humans 50 in vivo study 46 signal transduction 46 rat 42 adult 40 pathology 40