animal cell controlled study nonhuman article 593 Animals 570 priority journal 561 mouse 328 animal experiment 309 Mice 277 unclassified drug 254 female 244 animal tissue 224 protein expression 214 male 211 animal 206 Female 190 animal model 181 rat 180 human 176 Humans 167 metabolism 162 Article 160 Male 154 Rats 149 human cell 125 Animalia 121 cell proliferation 112 in vitro study 112 signal transduction 112 messenger RNA 85