animal cell article nonhuman 796 priority journal 599 controlled study 594 Animals 543 mouse 298 Mice 278 animal experiment 268 unclassified drug 241 female 220 rat 206 animal tissue 196 Animalia 190 protein expression 189 Female 188 male 176 Rats 175 animal model 155 Humans 144 Male 144 human 143 animal 108 human cell 103 cell proliferation 100 signal transduction 99 metabolism 90 in vitro study 86 Cells, Cultured 81 Rats, Sprague-Dawley 79