controlled study mouse priority journal nonhuman 889 Animals 731 article 703 Mice 700 animal experiment 576 animal cell 539 animal model 423 animal tissue 410 male 332 female 328 protein expression 302 Female 286 animal 259 Male 251 unclassified drug 243 Humans 208 metabolism 207 human 204 Article 186 Mice, Inbred BALB C 183 signal transduction 166 cell proliferation 139 Mice, Inbred C57BL 137 enzyme activity 133 human cell 129 in vitro study 125 protein function 120