Animals animal experiment animal model article nonhuman 528 controlled study 489 priority journal 387 mouse 360 Mice 357 animal tissue 293 Female 265 female 258 animal cell 252 Male 223 male 217 protein expression 160 Rats 141 rat 139 Mice, Inbred BALB C 136 Humans 112 unclassified drug 109 human 87 animal 84 enzyme activity 83 in vivo study 83 Animalia 81 cell proliferation 81 drug effect 80 Disease Models, Animal 77 in vitro study 77