Article animal cell animal experiment nonhuman 164 controlled study 158 Animals 138 animal 134 priority journal 118 mouse 108 animal tissue 98 metabolism 96 male 90 animal model 86 Mice 78 female 76 Male 62 protein expression 62 in vivo study 60 drug effects 54 unclassified drug 54 Female 52 human 46 physiology 46 adult 44 in vitro study 44 pathology 44 Humans 40 genetics 34 rat 30 C57BL mouse 26