animal model article controlled study nonhuman 644 animal experiment 601 Animals 516 priority journal 484 mouse 439 Mice 375 animal tissue 336 female 322 animal cell 293 Female 278 male 268 Male 225 protein expression 183 rat 180 Rats 151 Mice, Inbred BALB C 143 unclassified drug 127 Humans 122 enzyme activity 109 Animalia 100 human 100 cell proliferation 90 drug effect 86 in vivo study 85 Disease Models, Animal 78 animal 77 in vitro study 77