animal tissue controlled study mouse nonhuman Animals 430 animal experiment 420 Mice 410 priority journal 410 article 369 animal model 339 male 260 animal cell 241 female 237 Male 187 Female 184 protein expression 179 animal 174 Article 160 metabolism 146 unclassified drug 124 Mice, Inbred BALB C 108 Mice, Inbred C57BL 107 human 103 enzyme activity 98 Humans 96 signal transduction 93 cell proliferation 86 in vitro study 80 in vivo study 80 messenger RNA 78