Animals Mice article male mouse 280 nonhuman 277 Male 254 controlled study 245 animal experiment 222 priority journal 221 animal tissue 160 animal model 155 animal cell 123 female 99 Female 91 protein expression 78 animal 66 Animalia 52 Humans 51 drug effect 51 Mice, Inbred BALB C 50 Mus 50 human 49 Mice, Inbred C57BL 48 in vitro study 45 Liver 44 in vivo study 44 unclassified drug 44 Mice, Knockout 41 metabolism 39