Animals animal model article nonhuman 567 animal experiment 528 controlled study 516 priority journal 416 mouse 391 Mice 388 animal tissue 305 Female 283 animal cell 277 female 270 Male 234 male 226 protein expression 171 Mice, Inbred BALB C 151 Rats 149 rat 145 Humans 122 unclassified drug 117 human 95 Animalia 94 animal 92 enzyme activity 87 cell proliferation 85 drug effect 84 in vivo study 83 Disease Models, Animal 81 in vitro study 77