animal model controlled study nonhuman 848 animal experiment 797 Animals 650 article 650 priority journal 602 mouse 599 animal tissue 474 Mice 467 female 412 animal cell 387 male 364 Female 332 Male 277 protein expression 251 rat 216 animal 205 unclassified drug 193 Article 184 Humans 174 human 174 Rats 167 metabolism 162 Mice, Inbred BALB C 157 in vivo study 139 enzyme activity 137 in vitro study 129 cell proliferation 124 human cell 111